RHSA-2012:0467 - Security Advisory

Topic

Updated freetype packages that fix multiple security issues are now
available for Red Hat Enterprise Linux 5 and 6.

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.

Description

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.

Multiple flaws were found in the way FreeType handled TrueType Font (TTF),
Glyph Bitmap Distribution Format (BDF), Windows .fnt and .fon, and
PostScript Type 1 fonts. If a specially-crafted font file was loaded by an
application linked against FreeType, it could cause the application to
crash or, potentially, execute arbitrary code with the privileges of the
user running the application. (CVE-2012-1134, CVE-2012-1136, CVE-2012-1142,
CVE-2012-1144)

Multiple flaws were found in the way FreeType handled fonts in various
formats. If a specially-crafted font file was loaded by an application
linked against FreeType, it could cause the application to crash.
(CVE-2012-1126, CVE-2012-1127, CVE-2012-1130, CVE-2012-1131, CVE-2012-1132,
CVE-2012-1137, CVE-2012-1139, CVE-2012-1140, CVE-2012-1141, CVE-2012-1143)

Red Hat would like to thank Mateusz Jurczyk of the Google Security Team for
reporting these issues.

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

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.2 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.2 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.2 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.2 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.2 i386
• Red Hat Storage 2.0 x86_64
• Red Hat Gluster Storage Server for On-premise 2.0 x86_64
• Red Hat Storage for Public Cloud (via RHUI) 2.0 x86_64
• Red Hat Enterprise Linux Server - AUS 6.2 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 800581 - CVE-2012-1126 freetype: heap buffer over-read in BDF parsing _bdf_is_atom() (#35597, #35598)
• BZ - 800583 - CVE-2012-1127 freetype: heap buffer over-read in BDF parsing _bdf_parse_glyphs() (#35599, #35600)
• BZ - 800587 - CVE-2012-1130 freetype: heap buffer over-read in PCF parser pcf_get_properties() (#35603)
• BZ - 800589 - CVE-2012-1131 freetype: incorrect type cast allowing input sanity check bypass in ft_smooth_render_generic() (#35604)
• BZ - 800590 - CVE-2012-1132 freetype: heap buffer over-read in Type1 parser parse_subrs() (#35606)
• BZ - 800592 - CVE-2012-1134 freetype: limited heap buffer overflow in Type1 parser T1_Get_Private_Dict() (#35608)
• BZ - 800594 - CVE-2012-1136 freetype: uninitialized pointer use in BDF parser _bdf_parse_glyphs() (#35641)
• BZ - 800595 - CVE-2012-1137 freetype: heap buffer off-by-one in BDF parsing _bdf_list_ensure() (#35643)
• BZ - 800598 - CVE-2012-1139 freetype: data buffer underflow in BDF parser _bdf_parse_glyphs() (#35656)
• BZ - 800600 - CVE-2012-1140 freetype: multiple buffer over-read in PS parser conversion functions (#35657)
• BZ - 800602 - CVE-2012-1141 freetype: BDF parser _bdf_list_split() fails to properly initialize field array (#35658)
• BZ - 800604 - CVE-2012-1142 freetype: incorrect computation of number of glyphs in FNT_Face_Init() for FNT/FON files (#35659)
• BZ - 800606 - CVE-2012-1143 freetype: integer divide by zero in FT_DivFix() (#35660)
• BZ - 800607 - CVE-2012-1144 freetype: insufficient checking of first outline point in TTF parser (#35689)

CVEs

• CVE-2012-1131
• CVE-2012-1130
• CVE-2012-1132
• CVE-2012-1126
• CVE-2012-1127
• CVE-2012-1137
• CVE-2012-1136
• CVE-2012-1139
• CVE-2012-1143
• CVE-2012-1141
• CVE-2012-1144
• CVE-2012-1140
• CVE-2012-1142
• CVE-2012-1134

References

• https://access.redhat.com/security/updates/classification/#important