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Gentoo: GLSA-202311-05 High: LinuxCIFS local root escalation

gentoo
Calendar Grey November 24, 2023
Dist Gentoo Esm H88
A crucial warning exposes security flaws in LinuxCIFS tools, allowing local privilege escalation on Gentoo systems.
Multiple vulnerabilities have been discovered in LinuxCIFS utils, the worst of which can lead to local root privilege escalation.

Summary

Multiple vulnerabilities have been discovered in LinuxCIFS utils. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory high severity update gentoo privilege escalation linuxcifs

Resolution

All LinuxCIFS utils users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-fs/cifs-utils-6.15"

References

[ 1 ] CVE-2022-27239 https://nvd.nist.gov/vuln/detail/CVE-2022-27239 [ 2 ] CVE-2022-29869 https://nvd.nist.gov/vuln/detail/CVE-2022-29869

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202311-05
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: LinuxCIFS utils: Multiple Vulnerabilities
Date: November 24, 2023
Bugs: #842234
ID: 202311-05

Topics%20covered

Topics Covered

security advisory high severity update gentoo privilege escalation linuxcifs

Synopsis

Multiple vulnerabilities have been discovered in LinuxCIFS utils, the worst of which can lead to local root privilege escalation.

Background

The LinuxCIFS utils are a collection of tools for managing Linux CIFS Client Filesystems.

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Affected Packages

Package Vulnerable Unaffected ----------------- ------------ ------------ net-fs/cifs-utils < 6.15 >= 6.15

Impact

A stack-based buffer overflow when parsing the mount.cifs ip= command- line argument could lead to local attackers gaining root privileges.
When verbose logging is enabled, invalid credentials file lines may be dumped to stderr. This may lead to information disclosure in particular conditions when the credentials file given is sensitive and contains '=' signs.

Workaround

There is no known workaround at this time.

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