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libextractor: Multiple overflow vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200506-06 / libextractor
Release Date June 09, 2005
Latest Revision June 09, 2005: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
media-libs/libextractor < 0.5.0 >= 0.5.0 All supported architectures

Related bugreports: #79704


libextractor is affected by several overflow vulnerabilities in the PDF, Real and PNG extractors, making it vulnerable to execution of arbitrary code.

2.  Impact Information


libextractor is a library used to extract meta-data from files. It makes use of Xpdf code to extract information from PDF files.


Xpdf is vulnerable to multiple overflows, as described in GLSA 200501-28. Also, integer overflows were discovered in Real and PNG extractors.


An attacker could design malicious PDF, PNG or Real files which, when processed by an application making use of libextractor, would result in the execution of arbitrary code with the rights of the user running the application.

3.  Resolution Information


There is no known workaround at this time.


All libextractor users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libextractor-0.5.0"

4.  References


Page updated June 09, 2005

Summary: This is a Gentoo Linux Security Advisory

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