GLSA 201801-10: LibXfont, LibXfont2: Arbitrary file access
Severity: | normal |
Title: | LibXfont, LibXfont2: Arbitrary file access |
Date: | 01/08/2018 |
Bugs: |
|
ID: | 201801-10 |
Synopsis
A vulnerability has been found in LibXfont and LibXfont2 which may allow for arbitrary file access.Background
X.Org Xfont library.
Affected packages
Package | Vulnerable | Unaffected | Architecture(s) |
---|---|---|---|
x11-libs/libXfont | < 1.5.4 | >= 1.5.4 | All supported architectures |
x11-libs/libXfont2 | < 2.0.3 | >= 2.0.3 | All supported architectures |
Description
It was discovered that libXfont incorrectly followed symlinks when opening font files.
Impact
A local unprivileged user could use this flaw to cause the X server to access arbitrary files, including special device files.
Workaround
There is no known workaround at this time.
Resolution
All LibXfont users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=x11-libs/libXfont-1.5.4"
All LibXfont2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-libs/libXfont2-2.0.3"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
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.
License
Copyright 2010 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.