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Red Hat 6 RHSA-2012:0062-01 Moderate: t1lib Buffer Overflow Issue

red hat
Calendar Grey January 24, 2012
Scroller Redhat Esm H88
CentOS has deployed a significant patch for libjpeg to mitigate various vulnerabilities affecting their server environments.
Updated t1lib packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6

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/kb/docs/DOC-11259

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate buffer overflow Red Hat Enterprise Linux t1lib

References

https://access.redhat.com/security/cve/CVE-2010-2642 https://access.redhat.com/security/cve/CVE-2011-0433 https://access.redhat.com/security/cve/CVE-2011-0764 https://access.redhat.com/security/cve/CVE-2011-1552 https://access.redhat.com/security/cve/CVE-2011-1553 https://access.redhat.com/security/cve/CVE-2011-1554 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: t1lib-5.1.2-6.el6_2.1.i686.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.i686.rpm
x86_64: t1lib-5.1.2-6.el6_2.1.x86_64.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: t1lib-apps-5.1.2-6.el6_2.1.i686.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.i686.rpm t1lib-devel-5.1.2-6.el6_2.1.i686.rpm t1lib-static-5.1.2-6.el6_2.1.i686.rpm
x86_64: t1lib-5.1.2-6.el6_2.1.i686.rpm t1lib-apps-5.1.2-6.el6_2.1.x86_64.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.i686.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.x86_64.rpm t1lib-devel-5.1.2-6.el6_2.1.i686.rpm t1lib-devel-5.1.2-6.el6_2.1.x86_64.rpm t1lib-static-5.1.2-6.el6_2.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64: t1lib-5.1.2-6.el6_2.1.i686.rpm t1lib-5.1.2-6.el6_2.1.x86_64.rpm t1lib-apps-5.1.2-6.el6_2.1.x86_64.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.i686.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.x86_64.rpm t1lib-devel-5.1.2-6.el6_2.1.i686.rpm t1lib-devel-5.1.2-6.el6_2.1.x86_64.rpm t1lib-static-5.1.2-6.el6_2.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386: t1lib-5.1.2-6.el6_2.1.i686.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.i686.rpm
ppc64: t1lib-5.1.2-6.el6_2.1.ppc64.rpm t1lib-debuginfo-5.1.2-6.el6_2.1.ppc64.rpm
s390x:

Read the Full Advisory


Advisory ID: RHSA-2012:0062-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:0062.html
Issue date: 2012-01-24

Topic

Updated t1lib packages that fix multiple security issues are now availablefor Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory moderate buffer overflow Red Hat Enterprise Linux t1lib

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

666318 - CVE-2010-2642 evince, t1lib: Heap based buffer overflow in DVI file AFM font parser

679732 - CVE-2011-0433 evince, t1lib: Heap-based buffer overflow DVI file AFM font parser

692853 - CVE-2011-1552 t1lib: invalid read crash via crafted Type 1 font

692854 - CVE-2011-1553 t1lib: Use-after-free via crafted Type 1 font

692856 - CVE-2011-1554 t1lib: Off-by-one via crafted Type 1 font

692909 - CVE-2011-0764 t1lib: Invalid pointer dereference via crafted Type 1 font

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