[ GLSA 200804-18 ] Poppler: User-assisted execution of arbitrary code

2008-04-1700:00:00

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Gentoo Linux Security Advisory GLSA 200804-18:02

                                        http://security.gentoo.org/

Severity: Normal
Title: Poppler: User-assisted execution of arbitrary code
Date: April 17, 2008
Updated: April 17, 2008
Bugs: #216850
ID: 200804-18:02

Synopsis

Poppler does not handle fonts inside PDF files safely, allowing for
execution of arbitrary code.

Background

Poppler is a cross-platform PDF rendering library originally based on
Xpdf.

Affected packages

-------------------------------------------------------------------
 Package           /  Vulnerable  /                     Unaffected
-------------------------------------------------------------------

1 app-text/poppler < 0.6.3 >= 0.6.3

Description

Kees Cook from the Ubuntu Security Team reported that the
CairoFont::create() function in the file CairoFontEngine.cc does not
verify the type of an embedded font object inside a PDF file before
dereferencing a function pointer from it.

Impact

A remote attacker could entice a user to open a specially crafted PDF
file with a Poppler-based PDF viewer such as Gentoo's Xpdf, Epdfview,
or Evince, 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 Poppler users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-text/poppler-0.6.3&quot;

References

[ 1 ] CVE-2008-1693
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1693

Availability

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200804-18.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
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.