RHSA-2011:0009 - Security Advisory

Topic

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

The Red Hat Security Response Team has rated this update as having moderate
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

Evince is a document viewer.

An array index error was found in the DeVice Independent (DVI) renderer's
PK and VF font file parsers. A DVI file that references a specially-crafted
font file could, when opened, cause Evince to crash or, potentially,
execute arbitrary code with the privileges of the user running Evince.
(CVE-2010-2640, CVE-2010-2641)

A heap-based buffer overflow flaw was found in the DVI renderer's AFM font
file parser. A DVI file that references a specially-crafted font file
could, when opened, cause Evince to crash or, potentially, execute
arbitrary code with the privileges of the user running Evince.
(CVE-2010-2642)

An integer overflow flaw was found in the DVI renderer's TFM font file
parser. A DVI file that references a specially-crafted font file could,
when opened, cause Evince to crash or, potentially, execute arbitrary code
with the privileges of the user running Evince. (CVE-2010-2643)

Note: The above issues are not exploitable unless an attacker can trick the
user into installing a malicious font file.

Red Hat would like to thank the Evince development team for reporting these
issues. Upstream acknowledges Jon Larimer of IBM X-Force as the original
reporter of these issues.

Users are advised to upgrade to these updated packages, which contain a
backported patch to correct these issues.

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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 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 - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 666313 - CVE-2010-2640 evince: Array index errror in DVI file PK font parser
• BZ - 666314 - CVE-2010-2641 evince: Array index errror in DVI file VF font parser
• BZ - 666318 - CVE-2010-2642 evince: Heap based buffer overflow in DVI file AFM font parser
• BZ - 666321 - CVE-2010-2643 evince: Integer overflow in DVI file TFM font parser

CVEs

• CVE-2010-2640
• CVE-2010-2641
• CVE-2010-2642
• CVE-2010-2643

References

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