Headline
GHSA-cjqf-877p-7m3f: snapd Race Condition vulnerability
Race condition in snap-confine’s must_mkdir_and_open_with_perms()
snapd Race Condition vulnerability
High severity GitHub Reviewed Published Jan 8, 2024 to the GitHub Advisory Database • Updated Jan 12, 2024
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Qualys discovered a race condition (CVE-2022-3328) in snap-confine, a SUID-root program installed by default on Ubuntu. In this advisory,they tell the story of this vulnerability (which was introduced in February 2022 by the patch for CVE-2021-44731) and detail how they exploited it in Ubuntu Server (a local privilege escalation, from any user to root) by combining it with two vulnerabilities in multipathd (an authorization bypass and a symlink attack, CVE-2022-41974 and CVE-2022-41973).
The maintainers of the FreeBSD operating system have released updates to remediate a security vulnerability impacting the ping module that could be potentially exploited to crash the program or trigger remote code execution. The issue, assigned the identifier CVE-2022-23093, impacts all supported versions of FreeBSD and concerns a stack-based buffer overflow vulnerability in the ping service. "
Debian Linux Security Advisory 5292-1 - The Qualys Research Team discovered a race condition in the snapd-confine binary which could result in local privilege escalation.
Ubuntu Security Notice 5753-1 - The Qualys Research Team discovered that a race condition existed in the snapd snap-confine binary when preparing the private /tmp mount for a snap. A local attacker could possibly use this issue to escalate privileges and execute arbitrary code.