Joined: 13 Jun 2003
Location: Barcelona, Spain
|Posted: Tue Dec 28, 2004 1:37 pm Post subject: [ GLSA 200412-25 ] CUPS: Multiple vulnerabilities
|Gentoo Linux Security Advisory
Title: CUPS: Multiple vulnerabilities (GLSA 200412-25)
Exploitable: remote and local
Date: December 28, 2004
Updated: January 12, 2005
Bug(s): #74479, #75197, #77023
Multiple vulnerabilities have been found in CUPS, ranging from local Denial of Service attacks to the remote execution of arbitrary code.
The Common UNIX Printing System (CUPS) is a cross-platform print spooler, hpgltops is a CUPS filter handling printing of HPGL files and lppasswd is a program used locally to manage spooler passwords.
Vulnerable: < 1.1.23
Unaffected: >= 1.1.23
Architectures: All supported architectures
CUPS makes use of vulnerable Xpdf code to handle PDF files (CAN-2004-1125). Furthermore, Ariel Berkman discovered a buffer overflow in the ParseCommand function in hpgl-input.c in the hpgltops program (CAN-2004-1267). Finally, Bartlomiej Sieka discovered several problems in the lppasswd program: it ignores some write errors (CAN-2004-1268), it can leave the passwd.new file in place (CAN-2004-1269) and it does not verify that passwd.new file is different from STDERR (CAN-2004-1270).
The Xpdf and hpgltops vulnerabilities may be exploited by a remote attacker to execute arbitrary code by sending specific print jobs to a CUPS spooler. The lppasswd vulnerabilities may be exploited by a local attacker to write data to the CUPS password file or deny further password modifications.
There is no known workaround at this time.
All CUPS users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=net-print/cups-1.1.23"
Ariel Berkman Advisory
Bartlomiej Sieka Advisory
Last edited by GLSA on Sun May 07, 2006 4:54 pm; edited 1 time in total