GLSA 200508-08: Xpdf, Kpdf, GPdf: Denial of Service vulnerability

http://security.gentoo.org/

Severity:	normal
Title:	Xpdf, Kpdf, GPdf: Denial of Service vulnerability
Date:	08/16/2005
Bugs:	#99769, #100263, #100265
ID:	200508-08

Synopsis

Xpdf, Kpdf and GPdf may crash as a result of a Denial of Service vulnerability.

Background

Xpdf, Kpdf and GPdf are PDF file viewers that run under the X Window System. Kpdf and GPdf both contain Xpdf code. Kpdf is also part of kdegraphics.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-text/xpdf	< 3.00-r10	>= 3.00-r10	All supported architectures
kde-base/kdegraphics	< 3.3.2-r3	>= 3.3.2-r3	All supported architectures
kde-base/kpdf	< 3.4.1-r1	>= 3.4.1-r1	All supported architectures
app-text/gpdf	< 2.10.0-r1	>= 2.10.0-r1	All supported architectures

Description

Xpdf, Kpdf and GPdf do not handle a broken table of embedded TrueType fonts correctly. After detecting such a table, Xpdf, Kpdf and GPdf attempt to reconstruct the information in it by decoding the PDF file, which causes the generation of a huge temporary file.

Impact

A remote attacker may cause a Denial of Service by creating a specially crafted PDF file, sending it to a CUPS printing system (which uses Xpdf), or by enticing a user to open it in Xpdf, Kpdf, or GPdf.

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-3.00-r10"

All GPdf users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/gpdf-2.10.0-r1"

All Kpdf users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=kde-base/kdegraphics-3.3.2-r3"

All KDE Split Ebuild Kpdf users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=kde-base/kpdf-3.4.1-r1"

References

CAN-2005-2097

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200508-08.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.