RHEL 6 : t1lib (RHSA-2012:0062)

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Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated t1lib 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.

The t1lib library allows you to rasterize bitmaps from PostScript Type
1 fonts.

Two heap-based buffer overflow flaws were found in the way t1lib
processed Adobe Font Metrics (AFM) files. If a specially crafted font
file was opened by an application linked against t1lib, it could cause
the application to crash or, potentially, execute arbitrary code with
the privileges of the user running the application. (CVE-2010-2642,
CVE-2011-0433)

An invalid pointer dereference flaw was found in t1lib. A specially
crafted font file could, when opened, cause an application linked
against t1lib to crash or, potentially, execute arbitrary code with
the privileges of the user running the application. (CVE-2011-0764)

A use-after-free flaw was found in t1lib. A specially crafted font
file could, when opened, cause an application linked against t1lib to
crash or, potentially, execute arbitrary code with the privileges of
the user running the application. (CVE-2011-1553)

An off-by-one flaw was found in t1lib. A specially crafted font file
could, when opened, cause an application linked against t1lib to crash
or, potentially, execute arbitrary code with the privileges of the
user running the application. (CVE-2011-1554)

An out-of-bounds memory read flaw was found in t1lib. A specially
crafted font file could, when opened, cause an application linked
against t1lib to crash. (CVE-2011-1552)

Red Hat would like to thank the Evince development team for reporting
CVE-2010-2642. Upstream acknowledges Jon Larimer of IBM X-Force as the
original reporter of CVE-2010-2642.

All users of t1lib are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. All
applications linked against t1lib must be restarted for this update to
take effect.

See also :

https://www.redhat.com/security/data/cve/CVE-2010-2642.html
https://www.redhat.com/security/data/cve/CVE-2011-0433.html
https://www.redhat.com/security/data/cve/CVE-2011-0764.html
https://www.redhat.com/security/data/cve/CVE-2011-1552.html
https://www.redhat.com/security/data/cve/CVE-2011-1553.html
https://www.redhat.com/security/data/cve/CVE-2011-1554.html
http://rhn.redhat.com/errata/RHSA-2012-0062.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.6
(CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.6
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Red Hat Local Security Checks

Nessus Plugin ID: 57679 ()

Bugtraq ID: 45678
46941
47168
47169

CVE ID: CVE-2010-2642
CVE-2011-0433
CVE-2011-0764
CVE-2011-1552
CVE-2011-1553
CVE-2011-1554