#linux

Red Hat Security Advisory 2024-9678-03 - An update for squid is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Issues addressed include a denial of service vulnerability.

In a sign of the times, a backdoor malware whose ancestors date back to 2005 has morphed to target Linux systems.

The China-aligned advanced persistent threat (APT) actor known as Gelsemium has been observed using a new Linux backdoor dubbed WolfsBane as part of cyber attacks likely targeting East and Southeast Asia. That's according to findings from cybersecurity firm ESET based on multiple Linux samples uploaded to the VirusTotal platform from Taiwan, the Philippines, and Singapore in March 2023.

Judge0 does not account for symlinks placed inside the sandbox directory, which can be leveraged by an attacker to write to arbitrary files and gain code execution outside of the sandbox.

Debian Linux Security Advisory 5816-1 - The Qualys Threat Research Unit discovered that libmodule-scandeps-perl, a Perl module to recursively scan Perl code for dependencies, allows an attacker to execute arbitrary shell commands via specially crafted file names.

Debian Linux Security Advisory 5815-1 - The Qualys Threat Research Unit discovered several local privilege escalation vulnerabilities in needrestart, a utility to check which daemons need to be restarted after library upgrades. A local attacker can execute arbitrary code as root by tricking needrestart into running the Python interpreter with an attacker-controlled PYTHONPATH environment variable (CVE-2024-48990) or running the Ruby interpreter with an attacker-controlled RUBYLIB environment variable (CVE-2024-48992). Additionally a local attacker can trick needrestart into running a fake Python interpreter (CVE-2024-48991) or cause needrestart to call the Perl module Module::ScanDeps with attacker-controlled files (CVE-2024-11003).

Ubuntu Security Notice 7123-1 - It was discovered that the CIFS network file system implementation in the Linux kernel did not properly validate certain SMB messages, leading to an out-of-bounds read vulnerability. An attacker could use this to cause a denial of service or possibly expose sensitive information. Supraja Sridhara, Benedict Schlüter, Mark Kuhne, Andrin Bertschi, and Shweta Shinde discovered that the Confidential Computing framework in the Linux kernel for x86 platforms did not properly handle 32-bit emulation on TDX and SEV. An attacker with access to the VMM could use this to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice 7121-2 - Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

Ubuntu Security Notice 7120-2 - Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

Ubuntu Security Notice 7122-1 - A security issue was discovered in the Linux kernel. An attacker could possibly use this to compromise the system.