A vulnerability has been identified in Cisco IOS, which could be exploited by attackers to cause a denial of service or take complete control of an affected system. This issue is caused by a stack overflow error in the Line Printer Daemon (LPD) that insecurely displays the router's hostname using a "sprintf()" call when handling incoming TCP connections with a source port other than 515, which could be exploited by an attacker who has the ability to control or modify the hostname of a vulnerable device (e.g. via SNMP) to execute arbitrary code with elevated privileges.
Credits
Vulnerability reported by Andy Davis (IRM).
ChangeLog
2007-10-10 : Initial release
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