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

[GLSA]

Gentoo Linux Security Advisory

Title: CUPS: Stack overflow in included Xpdf code (GLSA 200501-30)
Severity: normal
Exploitable: remote
Date: January 22, 2005
Bug(s): #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: net-print/cups
Vulnerable: < 1.1.23-r1
Unaffected: >= 1.1.23-r1
Architectures: 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: