Security vulnerabilities have been discovered and corrected in CUPS.
CUPS before 1.3.8 allows local users, and possibly remote attackers,
to cause a denial of service (daemon crash) by adding a large number
of RSS Subscriptions, which triggers a NULL pointer dereference
(CVE-2008-5183).
The web interface (cgi-bin/admin.c) in CUPS before 1.3.8 uses the
guest username when a user is not logged on to the web server, which
makes it easier for remote attackers to bypass intended policy and
conduct CSRF attacks via the (1) add and (2) cancel RSS subscription
functions (CVE-2008-5184).
CUPS 1.1.17 through 1.3.9 allows remote attackers to execute arbitrary
code via a PNG image with a large height value, which bypasses a
validation check and triggers a buffer overflow (CVE-2008-5286).
CUPS shipped with Mandriva Linux allows local users to overwrite
arbitrary files via a symlink attack on the /tmp/pdf.log temporary file
(CVE-2009-0032).
The updated packages have been patched to prevent this.
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References:
http://cve.mitre.org/cgi-bin/cvename.cg ... -2008-5183
http://cve.mitre.org/cgi-bin/cvename.cg ... -2008-5184
http://cve.mitre.org/cgi-bin/cvename.cg ... -2008-5286
http://cve.mitre.org/cgi-bin/cvename.cg ... -2009-0032
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