Oracle Linux 4 / 5 : freetype (ELSA-2010-0737)

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Synopsis :

The remote Oracle Linux host is missing one or more security updates.

Description :

From Red Hat Security Advisory 2010:0737 :

Updated freetype packages that fix multiple security issues are now
available for Red Hat Enterprise Linux 4 and 5.

The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.

FreeType is a free, high-quality, portable font engine that can open
and manage font files. It also loads, hints, and renders individual
glyphs efficiently. The freetype packages for Red Hat Enterprise Linux
4 provide both the FreeType 1 and FreeType 2 font engines. The
freetype packages for Red Hat Enterprise Linux 5 provide only the
FreeType 2 font engine.

It was discovered that the FreeType font rendering engine improperly
validated certain position values when processing input streams. If a
user loaded a specially-crafted font file with an application linked
against FreeType, and the relevant font glyphs were subsequently
rendered with the X FreeType library (libXft), it could trigger a
heap-based buffer overflow in the libXft library, causing the
application to crash or, possibly, execute arbitrary code with the
privileges of the user running the application. (CVE-2010-3311)

A stack-based buffer overflow flaw was found in the way the FreeType
font rendering engine processed some PostScript Type 1 fonts. If a
user loaded a specially-crafted font file with an application linked
against FreeType, it could cause the application to crash or,
possibly, execute arbitrary code with the privileges of the user
running the application. (CVE-2010-2808)

An array index error was found in the way the FreeType font rendering
engine processed certain PostScript Type 42 font files. If a user
loaded a specially-crafted font file with an application linked
against FreeType, it could cause the application to crash or,
possibly, execute arbitrary code with the privileges of the user
running the application. (CVE-2010-2806)

A stack overflow flaw was found in the way the FreeType font rendering
engine processed PostScript Type 1 font files that contain nested
Standard Encoding Accented Character (seac) calls. If a user loaded a
specially-crafted font file with an application linked against
FreeType, it could cause the application to crash. (CVE-2010-3054)

Note: All of the issues in this erratum only affect the FreeType 2
font engine.

Users are advised to upgrade to these updated packages, which contain
backported patches to correct these issues. The X server must be
restarted (log out, then log back in) for this update to take effect.

See also :

https://oss.oracle.com/pipermail/el-errata/2010-October/001668.html
https://oss.oracle.com/pipermail/el-errata/2010-October/001669.html

Solution :

Update the affected freetype packages.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 68108 ()

Bugtraq ID:

CVE ID: CVE-2010-2806
CVE-2010-2808
CVE-2010-3054
CVE-2010-3311