RHSA-2012:0062: Moderate: t1lib security update
First published: Tue Jan 24 2012(Updated: )
The t1lib library allows you to rasterize bitmaps from PostScript Type 1<br>fonts.<br>Two heap-based buffer overflow flaws were found in the way t1lib processed<br>Adobe Font Metrics (AFM) files. If a specially-crafted font file was opened<br>by an application linked against t1lib, it could cause the application to<br>crash or, potentially, execute arbitrary code with the privileges of the<br>user running the application. (CVE-2010-2642, CVE-2011-0433)<br>An invalid pointer dereference flaw was found in t1lib. A specially-crafted<br>font file could, when opened, cause an application linked against t1lib to<br>crash or, potentially, execute arbitrary code with the privileges of the<br>user running the application. (CVE-2011-0764)<br>A use-after-free flaw was found in t1lib. A specially-crafted font file<br>could, when opened, cause an application linked against t1lib to crash or,<br>potentially, execute arbitrary code with the privileges of the user<br>running the application. (CVE-2011-1553)<br>An off-by-one flaw was found in t1lib. A specially-crafted font file could,<br>when opened, cause an application linked against t1lib to crash or,<br>potentially, execute arbitrary code with the privileges of the user running<br>the application. (CVE-2011-1554)<br>An out-of-bounds memory read flaw was found in t1lib. A specially-crafted<br>font file could, when opened, cause an application linked against t1lib to<br>crash. (CVE-2011-1552)<br>Red Hat would like to thank the Evince development team for reporting<br>CVE-2010-2642. Upstream acknowledges Jon Larimer of IBM X-Force as the<br>original reporter of CVE-2010-2642.<br>All users of t1lib are advised to upgrade to these updated packages, which<br>contain backported patches to correct these issues. All applications linked<br>against t1lib must be restarted for this update to take effect.<br>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/t1lib | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib-apps | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib-debuginfo | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib-debuginfo | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib-devel | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib-devel | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib-static | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib-apps | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
| redhat/t1lib-static | <5.1.2-6.el6_2.1 | 5.1.2-6.el6_2.1 |
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Reference Links
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=666318
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=679732
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=692853
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=692854
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=692856
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=692909
- https://access.redhat.com/security/updates/classification/#moderate
- https://access.redhat.com/errata/RHSA-2012:0062 (Advisory)
Frequently Asked Questions
What is the severity of RHSA-2012:0062?
RHSA-2012:0062 is classified as a critical vulnerability due to the potential for remote code execution via heap-based buffer overflow.
How do I fix RHSA-2012:0062?
To address RHSA-2012:0062, upgrade the t1lib, t1lib-devel, and t1lib-apps packages to version 5.1.2-6.el6_2.1 or later.
Which systems are affected by RHSA-2012:0062?
RHSA-2012:0062 affects systems that use the t1lib library for processing Adobe Font Metrics files.
What are the risks associated with RHSA-2012:0062?
The risks include potential exploitation that could lead to crash or execution of arbitrary code when processing specially crafted font files.
Is there an official security advisory for RHSA-2012:0062?
Yes, there is an official Red Hat security advisory for RHSA-2012:0062 that details the vulnerabilities and resolutions.
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