A vulnerability has been identified in CUPS, which could be exploited by remote or local attackers to cause a denial of service or execute arbitrary code. This issue is caused by a buffer overflow error in the "cgiCompileSearch()" [cgi-bin/search.c] when processing user-supplied search requests sent to port 631/TCP, which could be exploited by attackers to crash an affected application or compromise a vulnerable system via a specially crafted request.
Note: In order to exploit this vulnerability remotely, the targeted host must be sharing a printer on the network. If a printer is not being shared, CUPS only listens on the localhost interface, and the scope of this vulnerability would be limited to a local privilege escalation.
Credits
Vulnerability reported by regenrecht.
ChangeLog
2008-03-19 : Initial release
2008-04-02 : Updated Solution
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