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CVE-2014-0209

Status Candidate

Overview

Multiple integer overflows in the (1) FontFileAddEntry and (2) lexAlias functions in X.Org libXfont before 1.4.8 and 1.4.9x before 1.4.99.901 might allow local users to gain privileges by adding a directory with a large fonts.dir or fonts.alias file to the font path, which triggers a heap-based buffer overflow, related to metadata.

Related Files

Mandriva Linux Security Advisory 2015-145-1
Posted Mar 31, 2015
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2015-145 - Ilja van Sprundel discovered that libXfont incorrectly handled font metadata file parsing. A local attacker could use this issue to cause libXfont to crash, or possibly execute arbitrary code in order to gain privileges. Ilja van Sprundel discovered that libXfont incorrectly handled X Font Server replies. A malicious font server could return specially-crafted data that could cause libXfont to crash, or possibly execute arbitrary code. The bdf parser reads a count for the number of properties defined in a font from the font file, and allocates arrays with entries for each property based on that count. It never checked to see if that count was negative, or large enough to overflow when multiplied by the size of the structures being allocated, and could thus allocate the wrong buffer size, leading to out of bounds writes. If the bdf parser failed to parse the data for the bitmap for any character, it would proceed with an invalid pointer to the bitmap data and later crash when trying to read the bitmap from that pointer. The bdf parser read metrics values as 32-bit integers, but stored them into 16-bit integers. Overflows could occur in various operations leading to out-of-bounds memory access.

tags | advisory, overflow, arbitrary, local
systems | linux, mandriva
advisories | CVE-2014-0209, CVE-2014-0210, CVE-2014-0211, CVE-2015-1802, CVE-2015-1803, CVE-2015-1804
MD5 | 7e6347413032d379e2435fe41b73959d
Mandriva Linux Security Advisory 2015-145
Posted Mar 30, 2015
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2015-145 - Ilja van Sprundel discovered that libXfont incorrectly handled font metadata file parsing. A local attacker could use this issue to cause libXfont to crash, or possibly execute arbitrary code in order to gain privileges. Ilja van Sprundel discovered that libXfont incorrectly handled X Font Server replies. A malicious font server could return specially-crafted data that could cause libXfont to crash, or possibly execute arbitrary code. The bdf parser reads a count for the number of properties defined in a font from the font file, and allocates arrays with entries for each property based on that count. It never checked to see if that count was negative, or large enough to overflow when multiplied by the size of the structures being allocated, and could thus allocate the wrong buffer size, leading to out of bounds writes. If the bdf parser failed to parse the data for the bitmap for any character, it would proceed with an invalid pointer to the bitmap data and later crash when trying to read the bitmap from that pointer. The bdf parser read metrics values as 32-bit integers, but stored them into 16-bit integers. Overflows could occur in various operations leading to out-of-bounds memory access.

tags | advisory, overflow, arbitrary, local
systems | linux, mandriva
advisories | CVE-2014-0209, CVE-2014-0210, CVE-2014-0211, CVE-2015-1802, CVE-2015-1803, CVE-2015-1804
MD5 | 71e002230fabfd04a0f760a4bbd79639
Red Hat Security Advisory 2014-1893-01
Posted Nov 24, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-1893-01 - The libXfont packages provide the X.Org libXfont runtime library. X.Org is an open source implementation of the X Window System. A use-after-free flaw was found in the way libXfont processed certain font files when attempting to add a new directory to the font path. A malicious, local user could exploit this issue to potentially execute arbitrary code with the privileges of the X.Org server. Multiple out-of-bounds write flaws were found in the way libXfont parsed replies received from an X.org font server. A malicious X.org server could cause an X client to crash or, possibly, execute arbitrary code with the privileges of the X.Org server.

tags | advisory, arbitrary, local
systems | linux, redhat
advisories | CVE-2014-0209, CVE-2014-0210, CVE-2014-0211
MD5 | bbeb12ce3b04ff3f19dbb11f25f640b5
Red Hat Security Advisory 2014-1870-01
Posted Nov 18, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-1870-01 - The libXfont packages provide the X.Org libXfont runtime library. X.Org is an open source implementation of the X Window System. A use-after-free flaw was found in the way libXfont processed certain font files when attempting to add a new directory to the font path. A malicious, local user could exploit this issue to potentially execute arbitrary code with the privileges of the X.Org server. Multiple out-of-bounds write flaws were found in the way libXfont parsed replies received from an X.org font server. A malicious X.org server could cause an X client to crash or, possibly, execute arbitrary code with the privileges of the X.Org server.

tags | advisory, arbitrary, local
systems | linux, redhat
advisories | CVE-2014-0209, CVE-2014-0210, CVE-2014-0211
MD5 | fb725e6b8cc5d6a5ac65782bdd7d009d
Mandriva Linux Security Advisory 2014-132
Posted Jul 9, 2014
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2014-132 - Ilja van Sprundel discovered that libXfont incorrectly handled font metadata file parsing. A local attacker could use this issue to cause libXfont to crash, or possibly execute arbitrary code in order to gain privileges. Ilja van Sprundel discovered that libXfont incorrectly handled X Font Server replies. A malicious font server could return specially-crafted data that could cause libXfont to crash, or possibly execute arbitrary code.

tags | advisory, arbitrary, local
systems | linux, mandriva
advisories | CVE-2014-0209, CVE-2014-0210, CVE-2014-0211
MD5 | 5ae41c17320fd3f8ec7f39c916d0c771
Gentoo Linux Security Advisory 201406-11
Posted Jun 16, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201406-11 - Multiple vulnerabilities have been found in libXfont, the worst of which allow for local privilege escalation. Versions less than 1.4.8 are affected.

tags | advisory, local, vulnerability
systems | linux, gentoo
advisories | CVE-2014-0209, CVE-2014-0210, CVE-2014-0211
MD5 | 3fcc3e98c90bfc808d5671327e3d6134
Debian Security Advisory 2927-1
Posted May 15, 2014
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2927-1 - Ilja van Sprundel of IOActive discovered several security issues in the X.Org libXfont library, which may allow a local, authenticated user to attempt to raise privileges; or a remote attacker who can control the font server to attempt to execute code with the privileges of the X server.

tags | advisory, remote, local
systems | linux, debian
advisories | CVE-2014-0209, CVE-2014-0210, CVE-2014-0211
MD5 | 1d6584f0cbef7505c76448c98257d062
Ubuntu Security Notice USN-2211-1
Posted May 14, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2211-1 - Ilja van Sprundel discovered that libXfont incorrectly handled font metadata file parsing. A local attacker could use this issue to cause libXfont to crash, or possibly execute arbitrary code in order to gain privileges. Ilja van Sprundel discovered that libXfont incorrectly handled X Font Server replies. A malicious font server could return specially-crafted data that could cause libXfont to crash, or possibly execute arbitrary code. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS, Ubuntu 12.10 and Ubuntu 13.10. Various other issues were also addressed.

tags | advisory, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2014-0209, CVE-2014-0210, CVE-2014-0211
MD5 | ca4e6b882df5f54bc098a6819a05ca91
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