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

http://security.gentoo.org/

Severity:	normal
Title:	Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows
Date:	01/30/2006
Bugs:	#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	Vulnerable	Unaffected	Architecture(s)
app-text/xpdf	< 3.01-r5	>= 3.01-r5	All supported architectures
app-text/poppler	< 0.4.3-r4	>= 0.4.3-r4	All supported architectures
app-text/gpdf	< 2.10.0-r3	>= 2.10.0-r3	All supported architectures
media-libs/libextractor	< 0.5.9	>= 0.5.9	All supported architectures
app-text/pdftohtml	< 0.36-r4		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:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/xpdf-3.01-r5"

All Poppler users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/poppler-0.4.3-r4"

All GPdf users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/gpdf-2.10.0-r3"

All libextractor users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libextractor-0.5.9"

All pdftohtml users should migrate to the latest stable version of Poppler.

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200601-17.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.