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Gentoo Linux Security Advisory 202310-09

Gentoo Linux Security Advisory 202310-9 - Multiple vulnerabilities have been discovered in c-ares the worst of which could result in Denial of Service. Versions greater than or equal to 1.19.1 are affected.

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Gentoo Linux Security Advisory GLSA 202310-09


                                       https://security.gentoo.org/  

Severity: Normal
Title: c-ares: Multiple Vulnerabilities
Date: October 08, 2023
Bugs: #906964
ID: 202310-09


Synopsis

Multiple vulnerabilities have been discovered in c-ares the worst of
which could result in Denial of Service.

Background

c-ares is a C library for asynchronous DNS requests (including name
resolves).

Affected packages

Package Vulnerable Unaffected


net-dns/c-ares < 1.19.1 >= 1.19.1

Description

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

Impact

Please review the referenced CVE identifiers for details.

Workaround

There is no known workaround at this time.

Resolution

All c-ares users should upgrade to the latest version:

emerge --sync

emerge --ask --oneshot --verbose “>=net-dns/c-ares-1.19.1”

References

[ 1 ] CVE-2023-31124
https://nvd.nist.gov/vuln/detail/CVE-2023-31124
[ 2 ] CVE-2023-31130
https://nvd.nist.gov/vuln/detail/CVE-2023-31130
[ 3 ] CVE-2023-31147
https://nvd.nist.gov/vuln/detail/CVE-2023-31147
[ 4 ] CVE-2023-32067
https://nvd.nist.gov/vuln/detail/CVE-2023-32067

Availability

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202310-09

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
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License

Copyright 2023 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5

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CVE-2023-31130: Release 1.19.1 · c-ares/c-ares

c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1.

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CVE-2023-31130: Release 1.19.1 · c-ares/c-ares

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CVE-2023-31130: Release 1.19.1 · c-ares/c-ares

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