Backdoor in XZ Utils That Almost Happened

Last week, the Internet dodged a major nation-state attack that would have had catastrophic cybersecurity repercussions worldwide. It’s a catastrophe that didn’t happen, so it won’t get much attention—but it should. There’s an important moral to the story of the attack and its discovery: The security of the global Internet depends on countless obscure pieces of software written and maintained by even more obscure unpaid, distractible, and sometimes vulnerable volunteers. It’s an untenable situation, and one that is being exploited by malicious actors. Yet precious little is being done to remedy it…

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XZ Utils Supply Chain Attack: A Threat Actor Spent Two Years to Implement a Linux Backdoor

Read about a supply chain attack that involves XZ Utils, a data compressor widely used in Linux systems, and learn how to protect from this threat. Continue reading XZ Utils Supply Chain Attack: A Threat Actor Spent Two Years to Implement a Linux Backdoor

XZ Utils backdoor: Detection tools, scripts, rules

As the analysis of the backdoor in XZ Utils continues, several security companies have provided tools and advice on how to detect its presence on Linux systems. What happened? The open-source XZ Utils compression utility has been backdoored by a skille… Continue reading XZ Utils backdoor: Detection tools, scripts, rules

Does GUIX provide cryptographic authentication and integrity validation?

Does the GNU GUIX package manager in require successful cryptographic authentication and integrity validation for all packages?
I know that software downloaded with apt-get packages must be cryptographically verified because the repo’s man… Continue reading Does GUIX provide cryptographic authentication and integrity validation?

XZ Utils Backdoor

The cybersecurity world got really lucky last week. An intentionally placed backdoor in XZ Utils, an open-source compression utility, was pretty much accidentally discovered by a Microsoft engineer—weeks before it would have been incorporated into both Debian and Red Hat Linux. From ArsTehnica:

Malicious code added to XZ Utils versions 5.6.0 and 5.6.1 modified the way the software functions. The backdoor manipulated sshd, the executable file used to make remote SSH connections. Anyone in possession of a predetermined encryption key could stash any code of their choice in an SSH login certificate, upload it, and execute it on the backdoored device. No one has actually seen code uploaded, so it’s not known what code the attacker planned to run. In theory, the code could allow for just about anything, including stealing encryption keys or installing malware…

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Backdoor Discovered in XZ Utils: Patch Your Systems Now (CVE-2024-3094)

By Waqas
Critical Backdoor Alert! Patch XZ Utils Now (CVE-2024-3094) & Secure Your Linux System. Learn how a hidden backdoor…
This is a post from HackRead.com Read the original post: Backdoor Discovered in XZ Utils: Patch Your Systems Now (CV… Continue reading Backdoor Discovered in XZ Utils: Patch Your Systems Now (CVE-2024-3094)