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Gentoo Linux Security Advisory GLSA 202208-33

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                                       https://security.gentoo.org/  

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Severity: Normal
Title: Gnome Shell, gettext, libcroco: Multiple Vulnerabilities
Date: August 21, 2022
Bugs: #722752, #755848, #769998
ID: 202208-33

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Synopsis

A vulnerability has been found in libcroco which could result in denial
of service.

Background

GNOME Shell provides core user interface functions for the GNOME
desktop, like switching to windows and launching applications.

gettext contains the GNU locale utilities.

libcroco is a standalone CSS2 parsing and manipulation library.

Affected packages

-------------------------------------------------------------------  
 Package              /     Vulnerable     /            Unaffected  
-------------------------------------------------------------------  

1 dev-libs/libcroco < 0.6.13 >= 0.6.13
2 gnome-base/gnome-shell < 3.36.7 >= 3.36.7
3 sys-devel/gettext < 0.21 >= 0.21

Description

The cr_parser_parse_any_core function in libcroco’s cr-parser.c does not
limit recursion, leading to a denial of service via a stack overflow
when trying to parse crafted CSS.

Gnome Shell and gettext bundle libcroco in their own sources and thus
are potentially vulnerable as well.

Impact

An attacker with control over the input to the library can cause a denial of service.

Workaround

There is no known workaround at this time.

Resolution

All gettext users should upgrade to the latest version:

emerge --sync

emerge --ask --oneshot --verbose “>=sys-devel/gettext-0.21”

All Gnome Shell users should upgrade to the latest version:

emerge --sync

emerge --ask --oneshot --verbose “>=gnome-base/gnome-shell-3.36.7”

All libcroco users should upgrade to the latest version:

emerge --sync

emerge --ask --oneshot --verbose “>Þv-libs/libcroco-0.6.13”

References

[ 1 ] CVE-2020-12825
https://nvd.nist.gov/vuln/detail/CVE-2020-12825

Availability

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

https://security.gentoo.org/glsa/202208-33

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 2022 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