GLSA 200501-30: CUPS: Stack overflow in included Xpdf code

http://security.gentoo.org/

Severity:	normal
Title:	CUPS: Stack overflow in included Xpdf code
Date:	01/22/2005
Bugs:	#78249
ID:	200501-30

Synopsis

CUPS includes Xpdf code and therefore is vulnerable to the recent stack overflow issue, potentially resulting in the remote execution of arbitrary code.

Background

The Common UNIX Printing System (CUPS) is a cross-platform print spooler. It makes use of Xpdf code to handle PDF files.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-print/cups	< 1.1.23-r1	>= 1.1.23-r1	All supported architectures

Description

The Decrypt::makeFileKey2 function in Xpdf's Decrypt.cc insufficiently checks boundaries when processing /Encrypt /Length tags in PDF files (GLSA 200501-28).

Impact

This issue could be exploited by a remote attacker to execute arbitrary code by sending a malicious print job to a CUPS spooler.

Workaround

There is no known workaround at this time.

Resolution

All CUPS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-print/cups-1.1.23-r1"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200501-30.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.