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Gentoo: GLSA-202501-05 libuv hostname truncation normal

gentoo
Calendar Grey January 23, 2025
Dist Gentoo Esm H88
Explore the challenges posed by libuv regarding hostname cutoff, its impact on user experience, and the essential revisions required for Gentoo.
A vulnerability has been discovered in libuv, where hostname truncation can lead to attacker-controlled lookups.

Summary

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

Topics%20covered

Topics Covered

security advisory Gentoo security issue normal severity resolution libuv hostname truncation

Resolution

All libuv users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libuv-1.48.0"

References

[ 1 ] CVE-2024-24806 https://nvd.nist.gov/vuln/detail/CVE-2024-24806

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202501-05
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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: Normal
Title: libuv: Hostname Truncation
Date: January 23, 2025
Bugs: #924127
ID: 202501-05

Topics%20covered

Topics Covered

security advisory Gentoo security issue normal severity resolution libuv hostname truncation

Synopsis

A vulnerability has been discovered in libuv, where hostname truncation can lead to attacker-controlled lookups.

Background

libuv is a multi-platform support library with a focus on asynchronous I/O.

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Affected Packages

Package Vulnerable Unaffected -------------- ------------ ------------ dev-libs/libuv < 1.48.0 >= 1.48.0

Impact

The uv_getaddrinfo function in src/unix/getaddrinfo.c truncates hostnames to 256 characters before calling getaddrinfo. This behavior can be exploited to create addresses like 0x00007f000001, which are considered valid by getaddrinfo and could allow an attacker to craft payloads that resolve to unintended IP addresses, bypassing developer checks.

Workaround

There is no known workaround at this time.

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