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Debian: Security update for t1lib

Several vulnerabilities were discovered in t1lib, a Postscript Type 1 font rasterizer library, some of which might lead to code execution through the opening of files embedding bad fonts. A heap-based buffer overflow in the AFM font metrics parser potentially leads to the execution of arbitrary code. Another heap-based buffer overflow in the AFM font metrics parser potentially leads to the execution of arbitrary code. An invalid pointer dereference allows execution of arbitrary code using crafted Type 1 fonts. Another invalid pointer dereference results in an application crash, triggered by crafted Type 1 fonts. A use-after-free vulnerability results in an application crash, triggered by crafted Type 1 fonts. An off-by-one error results in an invalid memory read and application crash, triggered by crafted Type 1 fonts. Updated packages are available from security.debian.org.

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2388-1                   security@debian.org
http://www.debian.org/security/                         Yves-Alexis Perez
January 14, 2012                       http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : t1lib
Vulnerability  : several
Problem type   : local
Debian-specific: no
CVE ID         : CVE-2010-2642 CVE-2011-0433 CVE-2011-0764 CVE-2011-1552
                CVE-2011-1553 CVE-2011-1554
Debian Bug     : 652996

Several vulnerabilities were discovered in t1lib, a Postscript Type 1
font rasterizer library, some of which might lead to code execution
through the opening of files embedding bad fonts.

CVE-2010-2642
  A heap-based buffer overflow in the AFM font metrics parser
  potentially leads to the execution of arbitrary code.

CVE-2011-0433
  Another heap-based buffer overflow in the AFM font metrics
  parser potentially leads to the execution of arbitrary code.

CVE-2011-0764
  An invalid pointer dereference allows execution of arbitrary
  code using crafted Type 1 fonts.

CVE-2011-1552
  Another invalid pointer dereference results in an application
  crash, triggered by crafted Type 1 fonts.

CVE-2011-1553
  A use-after-free vulnerability results in an application
  crash, triggered by crafted Type 1 fonts.

CVE-2011-1554
  An off-by-one error results in an invalid memory read and
  application crash, triggered by crafted Type 1 fonts.

For the oldstable distribution (lenny), this problem has been fixed in
version 5.1.2-3+lenny1.

For the stable distribution (squeeze), this problem has been fixed in
version 5.1.2-3+squeeze1.

For the testing distribution (wheezy), this problem has been fixed in
version 5.1.2-3.3.

For the unstable distribution (sid), this problem has been fixed in
version 5.1.2-3.3.

We recommend that you upgrade your t1lib packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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