Ubuntu Security Notice USN-64-1
19th January, 2005
xpdf, cupsys vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 4.10
Details
A buffer overflow has been found in the xpdf viewer. An insufficient
input validation of the encryption key length could be exploited by an
attacker providing a specially crafted PDF file which, when processed
by xpdf, could result in abnormal program termination or the execution
of attacker supplied program code with the user's privileges.
The Common UNIX Printing System (CUPS) uses the same code to print PDF
files. In this case, this bug could be exploited to gain the
privileges of the CUPS print server (by default, user cupsys).
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 4.10:
- xpdf-utils
- xpdf-reader
- cupsys
- libcupsys2-gnutls10
- libcupsimage2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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