libextractor: Multiple overflow vulnerabilities

1. Gentoo Linux Security Advisory

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

Synopsis

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

Background

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

Description

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

Impact

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

Workaround

There is no known workaround at this time.

Resolution

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

Updated June 09, 2005

Summary: This is a Gentoo Linux Security Advisory

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