Debian Security Advisory

DSA-2388-1 t1lib -- several vulnerabilities

Date Reported:
14 Jan 2012
Affected Packages:
t1lib
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 652996.
In Mitre's CVE dictionary: CVE-2010-2642, CVE-2011-0433, CVE-2011-0764, CVE-2011-1552, CVE-2011-1553, CVE-2011-1554.
More information:

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 5.1.2-3.4.

For the unstable distribution (sid), this problem has been fixed in version 5.1.2-3.4.

We recommend that you upgrade your t1lib packages.