Michael Larabel reports via Phoronix: Following Germany's Sovereign Tech Fund providing significant funding for GNOME, Rust Coreutils, PHP, a systemd bug bounty, and numerous other free software projects, the FFmpeg multimedia library is the latest beneficiary to this funding from the Germany government. The Sovereign Tech Fund notes that the FFmpeg project is receiving 157,580 euros for 2024 and 2025.

An announcement on the FFmpeg.org project site notes: "The FFmpeg community is excited to announce that Germany's Sovereign Tech Fund has become its first governmental sponsor. Their support will help sustain the [maintenance] of the FFmpeg project, a critical open-source software multimedia component essential to bringing audio and video to billions around the world everyday."

An anonymous reader quotes a report from Ars Technica: Within approximately 12 seconds, two highly educated brothers allegedly stole $25 million by tampering with the ethereum blockchain in a never-before-seen cryptocurrency scheme, according to an indictment that the US Department of Justice unsealed Wednesday. In a DOJ press release, US Attorney Damian Williams said the scheme was so sophisticated that it "calls the very integrity of the blockchain into question."

"The brothers, who studied computer science and math at one of the most prestigious universities in the world, allegedly used their specialized skills and education to tamper with and manipulate the protocols relied upon by millions of ethereum users across the globe," Williams said. "And once they put their plan into action, their heist only took 12 seconds to complete." Anton, 24, and James Peraire-Bueno, 28, were arrested Tuesday, charged with conspiracy to commit wire fraud, wire fraud, and conspiracy to commit money laundering. Each brother faces "a maximum penalty of 20 years in prison for each count," the DOJ said. The indictment goes into detail explaining that the scheme allegedly worked by exploiting the ethereum blockchain in the moments after a transaction was conducted but before the transaction was added to the blockchain. To uncover the scheme, the special agent in charge, Thomas Fattorusso of the IRS Criminal Investigation (IRS-CI) New York Field Office, said that investigators "simply followed the money."

"Regardless of the complexity of the case, we continue to lead the effort in financial criminal investigations with cutting-edge technology and good-ol'-fashioned investigative work, on and off the blockchain," Fattorusso said.

An anonymous reader shares a report: There are concerning reports on Reddit that Apple's latest iOS 17.5 update has introduced a bug that causes old photos that were deleted -- in some cases years ago -- to reappear in users' photo libraries. After updating their iPhone, one user said they were shocked to find old NSFW photos that they deleted in 2021 suddenly showing up in photos marked as recently uploaded to iCloud. Other users have also chimed in with similar stories. "Same here," said one Redditor. "I have four pics from 2010 that keep reappearing as the latest pics uploaded to iCloud. I have deleted them repeatedly." "Same thing happened to me," replied another user. "Six photos from different times, all I have deleted. Some I had deleted in 2023." More reports have been trickling in overnight. One said: "I had a random photo from a concert taken on my Canon camera reappear in my phone library, and it showed up as if it was added today."

The blog Its FOSS has 15,000 followers for its Mastodon account — which they think is causing problems: When you share a link on Mastodon, a link preview is generated for it, right? With Mastodon being a federated platform (a part of the Fediverse), the request to generate a link preview is not generated by just one Mastodon instance. There are many instances connected to it who also initiate requests for the content almost immediately. And, this "fediverse effect" increases the load on the website's server in a big way.

Sure, some websites may not get overwhelmed with the requests, but Mastodon does generate numerous hits, increasing the load on the server. Especially, if the link reaches a profile with more followers (and a broader network of instances)... We tried it on our Mastodon profile, and every time we shared a link, we were able to successfully make our website unresponsive or slow to load.
Slashdot reader nunojsilva is skeptical that "blurbs with a thumbnail and description" could create the issue (rather than, say, poorly-optimized web content). But the It's Foss blog says they found three GitHub issues about the same problem — one from 2017, and two more from 2023. And other blogs also reported the same issue over a year ago — including software developer Michael Nordmeyer and legendary Netscape programmer Jamie Zawinski.

And back in 2022, security engineer Chris Partridge wrote: [A] single roughly ~3KB POST to Mastodon caused servers to pull a bit of HTML and... an image. In total, 114.7 MB of data was requested from my site in just under five minutes — making for a traffic amplification of 36704:1. [Not counting the image.]
Its Foss reports Mastodon's official position that the issue has been "moved as a milestone for a future 4.4.0 release. As things stand now, the 4.4.0 release could take a year or more (who knows?)."

They also state their opinion that the issue "should have been prioritized for a faster fix... Don't you think as a community-powered, open-source project, it should be possible to attend to a long-standing bug, as serious as this one?"

The blog It's FOSS is "pissed at the casual arrogance of Ubuntu and its parent company Canonical..... The sheer audacity of not caring for its users reeks of Microsoft-esque arrogance." If you download a .deb package of a software, you cannot install it using the official graphical software center on Ubuntu anymore. When you double-click on the downloaded deb package, you'll see this error, "there is no app installed for Debian package files".

If you right-click and choose to open it with Software Center, you are in for another annoyance. The software center will go into eternal loading. It may look as if it is doing something, but it will go on forever. I could even livestream the loading app store on YouTube, and it would continue for the 12 years of its long-term support period.
Canonical software engineer Dennis Loose actually created an issue ticket for the problem himself — back in September of 2023. And two weeks ago he returned to the discussion to announce that fix "will be a priority for the next cycle". (Though "unfortunately we didn't have the capacity to work on this for 24.04...)

But Its Foss accused Canonical of "cleverly booting out deb in favor of Snap, one baby step at a time" (noting the problem started with Ubuntu 23.10): There is also the issue of replacing deb packages with Snap, even with the apt command line tool. You use 'sudo apt install chromium', you get a Snap package of Chromium instead of Debian
The venerable Linux magazine argues that Canonical "has secretly forced Snap installation on users." [I]t looks as if the Software app defaults to Snap packages for everything now. I combed through various apps and found this to be the case.... As far as the auto-installation of downloaded .deb files, you'll have to install something like gdebi to bring back this feature.

An anonymous reader quotes a report from TechCrunch: Ahead of its annual GitHub Universe conference in San Francisco early this fall, GitHub announced Copilot Workspace, a dev environment that taps what GitHub describes as "Copilot-powered agents" to help developers brainstorm, plan, build, test and run code in natural language. Jonathan Carter, head of GitHub Next, GitHub's software R&D team, pitches Workspace as somewhat of an evolution of GitHub's AI-powered coding assistant Copilot into a more general tool, building on recently introduced capabilities like Copilot Chat, which lets developers ask questions about code in natural language. "Through research, we found that, for many tasks, the biggest point of friction for developers was in getting started, and in particular knowing how to approach a [coding] problem, knowing which files to edit and knowing how to consider multiple solutions and their trade-offs," Carter said. "So we wanted to build an AI assistant that could meet developers at the inception of an idea or task, reduce the activation energy needed to begin and then collaborate with them on making the necessary edits across the entire corebase."

Given a GitHub repo or a specific bug within a repo, Workspace -- underpinned by OpenAI's GPT-4 Turbo model -- can build a plan to (attempt to) squash the bug or implement a new feature, drawing on an understanding of the repo's comments, issue replies and larger codebase. Developers get suggested code for the bug fix or new feature, along with a list of the things they need to validate and test that code, plus controls to edit, save, refactor or undo it. The suggested code can be run directly in Workspace and shared among team members via an external link. Those team members, once in Workspace, can refine and tinker with the code as they see fit.

Perhaps the most obvious way to launch Workspace is from the new "Open in Workspace" button to the left of issues and pull requests in GitHub repos. Clicking on it opens a field to describe the software engineering task to be completed in natural language, like, "Add documentation for the changes in this pull request," which, once submitted, gets added to a list of "sessions" within the new dedicated Workspace view. Workspace executes requests systematically step by step, creating a specification, generating a plan and then implementing that plan. Developers can dive into any of these steps to get a granular view of the suggested code and changes and delete, re-run or re-order the steps as necessary. "Since developers spend a lot of their time working on [coding issues], we believe we can help empower developers every day through a 'thought partnership' with AI," Carter said. "You can think of Copilot Workspace as a companion experience and dev environment that complements existing tools and workflows and enables simplifying a class of developer tasks ... We believe there's a lot of value that can be delivered in an AI-native developer environment that isn't constrained by existing workflows."

Though it's long past Y2K, another date-related bug is still with us, writes Slashdot reader Bruce66423, sharing this report from the BBC.

"A 101-year-old woman keeps getting mistaken for a baby, because of an error with an airline's booking system." The problem occurs because American Airlines' systems apparently cannot compute that Patricia, who did not want to share her surname, was born in 1922, rather than 2022.... [O]n one occasion, airport staff did not have transport ready for her inside the terminal as they were expecting a baby who could be carried...

[I]t appears the airport computer system is unable to process a birth date so far in the past — so it defaulted to one 100 years later instead... But she is adamant the IT problems will not put her off flying, and says she is looking forward to her next flight in the autumn. By then she will be 102 — and perhaps by then the airline computers will have caught on to her real age.

A software glitch in the "ticket in, cash out" (TICO) machines at Star Casino in Sydney, Australia, saw it inadvertently give away $2.05 million over several weeks. This glitch allowed gamblers to reuse a receipt for slot machine winnings, leading to unwarranted cash payouts which went undetected due to systematic failures in oversight and audit processes. The Register reports: News of the giveaway emerged on Monday at an independent inquiry into the casino, which has had years of compliance troubles that led to a finding that its operators were unsuitable to hold a license. In testimony [PDF] given on Monday to the inquiry, casino manager Nicholas Weeks explained that it is possible to insert two receipts into TICO machines. That was a feature, not a bug, and allowed gamblers to redeem two receipts and be paid the aggregate amount. But a software glitch meant that the machines would return one of those tickets and allow it to be re-used -- the barcode it bore was not recognized as having been paid.

"What occurred was small additional amounts of cash were being provided to customers in circumstances when they shouldn't have received it because of that defect," Weeks told the inquiry. Local media reported that news of the free cash got around and 43 people used the TICO machines to withdraw money to which they were not entitled -- at least one of them a recovering gambling addict who fell off the wagon as the "free" money allowed them to fund their activities. Known abusers of the TICO machines have been charged, and one of those set to face the courts is accused of association with a criminal group. (The first inquiry into The Star, two years ago, found it may have been targeted by organized crime groups.)

Framework, the company known for designing and selling upgradeable, modular laptops, has struggled with providing up-to-date software for its products. Ars Technica's Andrew Cunningham spoke with CEO Nirav Patel to discuss how the company is working on fixing these issues. Longtime Slashdot reader snikulin shares the report: Driver bundles remain un-updated for years after their initial release. BIOS updates go through long and confusing beta processes, keeping users from getting feature improvements, bug fixes, and security updates. In its community support forums, Framework employees, including founder and CEO Nirav Patel, have acknowledged these issues and promised fixes but have remained inconsistent and vague about actual timelines. [...] Patel says Framework has taken steps to improve the update problem, but he admits that the team's initial approach -- supporting existing laptops while also trying to spin up firmware for upcoming launches -- wasn't working. "We started 12th-gen [Intel Framework Laptop] development, basically the 12th-gen team was also handling looking back at 11th-gen [Intel Framework Laptop] to do firmware updates there," Patel told Ars. "And it became clear, especially as we continued to add on more platforms, that just wasn't a sustainable path to proceed on."

Part of the issue is that Framework relies on external companies to put together firmware updates. Some components are provided by Intel, AMD, and other chip companies to all PC companies that use their chips. Others are provided by Insyde, which writes UEFI firmware for Framework and others. And some are handled by Compal, the contract manufacturer that actually produces Framework's systems and has also designed and sold systems for most of the big-name PC companies. As far back as August 2023, Patel has written that the plan is to work with Compal and Insyde to hire dedicated staff to provide better firmware support for Framework laptops. However, the benefits of this arrangement have been slow to reach users. "[Compal] started recruiting on their side towards the end of last year," Patel told Ars. "And now, just at the beginning of this year, we've been able to get that whole team into place and start onboarding them. And especially after Lunar New Year, which is in early February, that team is now up and running at full speed." The goal, Patel says, is to continuously cycle through all of Framework's actively supported laptops, updating each of them one at a time before looping back around and starting the process over again. Functionality-breaking problems and security fixes will take precedence, while additional features and user requests will be lower-priority. ... snikulin adds: "As a recent Framework 13/AMD owner, I can confirm that it does not sleep properly on a default Windows 11 install. When I close the lid in the evening, the battery is dead the next morning. It's interesting to hear from Linus Sebastian (LTT) on the topic because he is a stakeholder in Framework."

A crypto wallet maker claimed this week that hackers may be targeting people with an iMessage "zero-day" exploit -- but all signs point to an exaggerated threat, if not a downright scam. From a report: Trust Wallet's official X (previously Twitter) account wrote that "we have credible intel regarding a high-risk zero-day exploit targeting iMessage on the Dark Web. This can infiltrate your iPhone without clicking any link. High-value targets are likely. Each use raises detection risk." The wallet maker recommended iPhone users to turn off iMessage completely "until Apple patches this," even though no evidence shows that "this" exists at all. The tweet went viral, and has been viewed over 3.6 million times as of our publication. Because of the attention the post received, Trust Wallet hours later wrote a follow-up post. The wallet maker doubled down on its decision to go public, saying that it "actively communicates any potential threats and risks to the community."

The U.S. government is warning that smart locks securing entry to an estimated 50,000 dwellings nationwide contain hard-coded credentials that can be used to remotely open any of the locks. Krebs on SecurityL: The lock's maker Chirp Systems remains unresponsive, even though it was first notified about the critical weakness in March 2021. Meanwhile, Chirp's parent company, RealPage, Inc., is being sued by multiple U.S. states for allegedly colluding with landlords to illegally raise rents. On March 7, 2024, the U.S. Cybersecurity & Infrastructure Security Agency (CISA) warned about a remotely exploitable vulnerability with "low attack complexity" in Chirp Systems smart locks.

"Chirp Access improperly stores credentials within its source code, potentially exposing sensitive information to unauthorized access," CISA's alert warned, assigning the bug a CVSS (badness) rating of 9.1 (out of a possible 10). "Chirp Systems has not responded to requests to work with CISA to mitigate this vulnerability." Matt Brown, the researcher CISA credits with reporting the flaw, is a senior systems development engineer at Amazon Web Services. Brown said he discovered the weakness and reported it to Chirp in March 2021, after the company that manages his apartment building started using Chirp smart locks and told everyone to install Chirp's app to get in and out of their apartments.

Microsoft has started showing full screen warnings about the upcoming end of support date on Windows 10 PCs. From a report: Users on Reddit have reported seeing the prompt, which began appearing after this week's Patch Tuesday updates were installed, and encourages the user to learn more about how they can transition to Windows 11. Windows 10's end of support date is currently set for October 14, 2025. After that date, Windows 10 users will no longer receive critical security and bug fix updates, leaving any Windows 10 PC connected to the internet vulnerable to any newly discovered security exploits. The full screen prompt that is now appearing on some Windows 10 PCs thanks the user for their loyalty using Windows 10, and warns that this end of life (EOL) date is approaching. It also wastes no time advertising Windows 11, encouraging the user to learn more about how they can transition to a new Windows 11 PC. Notably, there's no button to tell the prompt to never show again.

An anonymous reader shares a report: Google offers a VPN via its "Google One" monthly subscription plan, and while it debuted on phones, a desktop app has been available for Windows and Mac OS for over a year now. Since a lot of people pay for Google One for the cloud storage increase for their Google accounts, you might be tempted to try the VPN on a desktop, but Windows users testing out the app haven't seemed too happy lately. An open bug report on Google's GitHub for the project says the Windows app "breaks" the Windows DNS, and this has been ongoing since at least November.

A VPN would naturally route all your traffic through a secure tunnel, but you've still got to do DNS lookups somewhere. A lot of VPN services also come with a DNS service, and Google is no different. The problem is that Google's VPN app changes the Windows DNS settings of all network adapters to always use Google's DNS, whether the VPN is on or off. Even if you change them, Google's program will change them back. Most VPN apps don't work this way, and even Google's Mac VPN program doesn't work this way. The users in the thread (and the ones emailing us) expect the app, at minimum, to use the original Windows settings when the VPN is off. Since running a VPN is often about privacy and security, users want to be able to change the DNS away from Google even when the VPN is running.

quonset shares a report: In a scathing indictment of Microsoft corporate security and transparency, a Biden administration-appointed review board issued a report Tuesday saying "a cascade of errors" by the tech giant let state-backed Chinese cyber operators break into email accounts of senior U.S. officials including Commerce Secretary Gina Raimondo.

The Cyber Safety Review Board, created in 2021 by executive order, describes shoddy cybersecurity practices, a lax corporate culture and a lack of sincerity about the company's knowledge of the targeted breach, which affected multiple U.S. agencies that deal with China. It concluded that "Microsoft's security culture was inadequate and requires an overhaul" given the company's ubiquity and critical role in the global technology ecosystem. Microsoft products "underpin essential services that support national security, the foundations of our economy, and public health and safety."

The panel said the intrusion, discovered in June by the State Department and dating to May "was preventable and should never have occurred," blaming its success on "a cascade of avoidable errors." What's more, the board said, Microsoft still doesn't know how the hackers got in. [...] It said Microsoft's CEO and board should institute "rapid cultural change" including publicly sharing "a plan with specific timelines to make fundamental, security-focused reforms across the company and its full suite of products."

"After being in development since 2019, the huge NetBSD 10.0 is out today as a wonderful Easter surprise," reports Phoronix: NetBSD 10 provides WireGuard support, support for many newer Arm platforms including for Apple Silicon and newer Raspberry Pi boards, a new Intel Ethernet drive, support for Realtek 2.5GbE network adapters, SMP performance improvements, automatic swap encryption, and an enormous amount of other hardware support improvements that accumulated over the past 4+ years.

Plus there is no shortage of bug fixes and performance optimizations with NetBSD 10. Some tests of NetBSD 10.0 in development back during 2020 showed at that point it was already 12% faster than NetBSD 9.
"A lot of development went into this new release," NetBSD wrote on their blog, saying "This also caused the release announcement to be one of the longest we ever did."

Among the new userspace programs is warp(6), which they describe as a "classic BSD space war game (copyright donated to the NetBSD Foundation by Larry Wall)."

The Record reports: Ross Anderson, a professor of security engineering at the University of Cambridge who is widely recognized for his contributions to computing, passed away at home on Thursday according to friends and colleagues who have been in touch with his family and the University.

Anderson, who also taught at Edinburgh University, was one of the most respected academic engineers and computer scientists of his generation. His research included machine learning, cryptographic protocols, hardware reverse engineering and breaking ciphers, among other topics. His public achievements include, but are by no means limited to, being awarded the British Computer Society's Lovelace Medal in 2015, and publishing several editions of the Security Engineering textbook.
Anderson's security research made headlines throughout his career, with his name appearing in over a dozen Slashdot stories...

• 2023: Researchers Warn of 'Model Collapse' As AI Trains On AI-Generated Content

• 2021: 'Trojan Source' Bug Threatens the Security of All Code

• 2015: Factory Reset On Millions of Android Devices Doesn't Wipe Storage

• 2012: UK Web Snooping Plan Invades Privacy, Despite Claims To the Contrary

• 2010: Why "Verified By Visa" System Is Insecure

• 2008: Researchers Expose New Credit Card Fraud Risk

• 2006: "Security Engineering" Is Now Online. [The link from that 2006 post still works. Slashdot called Anderson's book "arguably the best information security book ever written" in one of two reviews, published in 2002 and 2010.]

• 2002:Security of Open vs. Closed Source Software.

• 2002: Analyzing Palladium

My favorite story? UK Banks Attempt To Censor Academic Publication.

"Cambridge University has resisted the demands and has sent a response to the bankers explaining why they will keep the page online..."

An anonymous reader quotes a report from KrebsOnSecurity: Several Apple customers recently reported being targeted in elaborate phishing attacks that involve what appears to be a bug in Apple's password reset feature. In this scenario, a target's Apple devices are forced to display dozens of system-level prompts that prevent the devices from being used until the recipient responds "Allow" or "Don't Allow" to each prompt. Assuming the user manages not to fat-finger the wrong button on the umpteenth password reset request, the scammers will then call the victim while spoofing Apple support in the caller ID, saying the user's account is under attack and that Apple support needs to "verify" a one-time code. [...]

What sanely designed authentication system would send dozens of requests for a password change in the span of a few moments, when the first requests haven't even been acted on by the user? Could this be the result of a bug in Apple's systems? Kishan Bagaria is a hobbyist security researcher and engineer who founded the website texts.com (now owned by Automattic), and he's convinced Apple has a problem on its end. In August 2019, Bagaria reported to Apple a bug that allowed an exploit he dubbed "AirDoS" because it could be used to let an attacker infinitely spam all nearby iOS devices with a system-level prompt to share a file via AirDrop -- a file-sharing capability built into Apple products.

Apple fixed that bug nearly four months later in December 2019, thanking Bagaria in the associated security bulletin. Bagaria said Apple's fix was to add stricter rate limiting on AirDrop requests, and he suspects that someone has figured out a way to bypass Apple's rate limit on how many of these password reset requests can be sent in a given timeframe. "I think this could be a legit Apple rate limit bug that should be reported," Bagaria said.

BrianFagioli shares a report from BetaNews: Canonical, the company behind the popular Ubuntu operating system, has announced a significant extension to the support lifecycle of its long-term support (LTS) releases. The new paid Legacy Support add-on for Ubuntu Pro subscribers will now provide security maintenance and support for an impressive 12 years, extending the previous 10-year commitment. This enhancement is available starting with Ubuntu 14.04 LTS and will benefit both enterprises and individual users who rely on the stability and security of Ubuntu for their critical systems. By default, Ubuntu LTS releases receive five years of standard security maintenance. However, with Ubuntu Pro, this is expanded to 10 years for both the main and universe repositories, offering access to a broader range of secure open-source software.

The Legacy Support add-on further extends this period by an additional two years, ensuring that organizations can maintain their systems with the latest security patches and support services without the immediate need to upgrade to a newer OS version. This is particularly beneficial for large, established production systems where transitioning to a new OS can be a complex and risky endeavor due to the potential need to update the entire software stack. The extended support includes continuous vulnerability management for critical, high, and medium Common Vulnerabilities and Exposures (CVEs) across all software packages shipped with Ubuntu. Canonical's security team actively backports crucial fixes to all supported Ubuntu LTS releases, providing peace of mind to users and enterprises. In addition to security maintenance, the Legacy Support add-on also offers phone and ticket support, enhancing Canonical's commitment to assisting customers with troubleshooting, break fixes, bug fixes, and guidance.

An anonymous reader shared this report from The Register: Chinese spies exploited a couple of critical-severity bugs in F5 and ConnectWise equipment earlier this year to sell access to compromised U.S. defense organizations, UK government agencies, and hundreds of other entities, according to Mandiant.

The Google-owned threat hunters said they assess, "with moderate confidence," that a crew they track as UNC5174 was behind the exploitation of CVE-2023-46747, a 9.8-out-of-10-CVSS-rated remote code execution bug in the F5 BIG-IP Traffic Management User Interface, and CVE-2024-1709, a path traversal flaw in ConnectWise ScreenConnect that scored a perfect 10 out of 10 CVSS severity rating.

UNC5174 uses the online persona Uteus, and has bragged about its links to China's Ministry of State Security (MSS) — boasts that may well be true. The gang focuses on gaining initial access into victim organizations and then reselling access to valuable targets... Just last month, Mandiant noticed the same combination of tools, believed to be unique to this particular Chinese gang, being used to exploit the ConnectWise flaw and compromise "hundreds" or entities, mostly in the U.S. and Canada. Also between October 2023 and February 2024, UNC5174 exploited CVE-2023-22518 in Atlassian Confluence, CVE-2022-0185 in Linux kernels, and CVE-2022-3052, a Zyxel Firewall OS command injection vulnerability, according to Mandiant.

These campaigns included "extensive reconnaissance, web application fuzzing, and aggressive scanning for vulnerabilities on internet-facing systems belonging to prominent universities in the U.S., Oceania, and Hong Kong regions," the threat intel team noted.
More details from The Record. "One of the strangest things the researchers found was that UNC5174 would create backdoors into compromised systems and then patch the vulnerability they used to break in. Mandiant said it believes this was an 'attempt to limit subsequent exploitation of the system by additional unrelated threat actors attempting to access the appliance.'"

BleepingComputer reports on "a new denial-of-service attack dubbed 'Loop DoS' targeting application layer protocols."

According to their article, the attack "can pair network services into an indefinite communication loop that creates large volumes of traffic." Devised by researchers at the CISPA Helmholtz-Center for Information Security, the attack uses the User Datagram Protocol (UDP) and impacts an estimated 300,000 host and their networks. The attack is possible due to a vulnerability, currently tracked as CVE-2024-2169, in the implementation of the UDP protocol, which is susceptible to IP spoofing and does not provide sufficient packet verification. An attacker exploiting the vulnerability creates a self-perpetuating mechanism that generates excessive traffic without limits and without a way to stop it, leading to a denial-of-service (DoS) condition on the target system or even an entire network. Loop DoS relies on IP spoofing and can be triggered from a single host that sends one message to start the communication.

According to the Carnegie Mellon CERT Coordination Center (CERT/CC) there are three potential outcomes when an attacker leverages the vulnerability:

— Overloading of a vulnerable service and causing it to become unstable or unusable.
— DoS attack on the network backbone, causing network outages to other services.
— Amplification attacks that involve network loops causing amplified DOS or DDOS attacks.

CISPA researchers Yepeng Pan and Professor Dr. Christian Rossow say the potential impact is notable, spanning both outdated (QOTD, Chargen, Echo) and modern protocols (DNS, NTP, TFTP) that are crucial for basic internet-based functions like time synchronization, domain name resolution, and file transfer without authentication... The researchers warned that the attack is easy to exploit, noting that there is no evidence indicating active exploitation at this time. Rossow and Pan shared their findings with affected vendors and notified CERT/CC for coordinated disclosure. So far, vendors who confirmed their implementations are affected by CVE-2024-2169 are Broadcom, Cisco, Honeywell, Microsoft, and MikroTik.

To avoid the risk of denial of service via Loop DoS, CERT/CC recommends installing the latest patches from vendors that address the vulnerability and replace products that no longer receive security updates. Using firewall rules and access-control lists for UDP applications, turning off unnecessary UDP services, and implementing TCP or request validation are also measures that can mitigate the risk of an attack. Furthermore, the organization recommends deploying anti-spoofing solutions like BCP38 and Unicast Reverse Path Forwarding (uRPF), and using Quality-of-Service (QoS) measures to limit network traffic and protect against abuse from network loops and DoS amplifications.