[ GLSA 200601-17 ] Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows

[GLSA]

Gentoo Linux Security Advisory

Title: Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows (GLSA 200601-17)
Severity: normal
Exploitable: remote
Date: January 30, 2006
Bug(s): #117481, #117494, #117495, #115789, #118665
ID: 200601-17

Synopsis

Xpdf, Poppler, GPdf, libextractor and pdftohtml are vulnerable to integer overflows that may be exploited to execute arbitrary code.

Background

Xpdf is a PDF file viewer that runs under the X Window System. Poppler is a PDF rendering library based on the Xpdf 3.0 code base. GPdf is a PDF file viewer for the GNOME 2 platform, also based on Xpdf. libextractor is a library which includes Xpdf code to extract arbitrary meta-data from files. pdftohtml is a utility to convert PDF files to HTML or XML formats that makes use of Xpdf code to decode PDF files.

Affected Packages

Package: app-text/xpdf
Vulnerable: < 3.01-r5
Unaffected: >= 3.01-r5
Architectures: All supported architectures

Package: app-text/poppler
Vulnerable: < 0.4.3-r4
Unaffected: >= 0.4.3-r4
Architectures: All supported architectures

Package: app-text/gpdf
Vulnerable: < 2.10.0-r3
Unaffected: >= 2.10.0-r3
Architectures: All supported architectures

Package: media-libs/libextractor
Vulnerable: < 0.5.9
Unaffected: >= 0.5.9
Architectures: All supported architectures

Package: app-text/pdftohtml
Vulnerable: < 0.36-r4
Architectures: All supported architectures


Description

Chris Evans has reported some integer overflows in Xpdf when attempting to calculate buffer sizes for memory allocation, leading to a heap overflow and a potential infinite loop when handling malformed input files.

Impact

By sending a specially crafted PDF file to a victim, an attacker could cause an overflow, potentially resulting in the execution of arbitrary code with the privileges of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All Xpdf users should upgrade to the latest version: