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TITLE:
Cisco IOS Line Printer Daemon Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA27169

VERIFY ADVISORY:
http://secunia.com/advisories/27169/

CRITICAL:
Not critical

IMPACT:
DoS, System access

WHERE:
>From local network

OPERATING SYSTEM:
Cisco IOS R12.x
http://secunia.com/product/50/
Cisco IOS 12.x
http://secunia.com/product/182/

DESCRIPTION:
Andy Davis has reported a vulnerability in Cisco IOS, which
potentially can be exploited by malicious people to cause a DoS
(Denial of Service) or compromise a vulnerable system.

The vulnerability is caused due to a boundary error within the LPD
service of Cisco IOS when printing an error message containing an
overly long (more than 99 bytes) hostname. This can be exploited to
cause a stack-based buffer overflow by e.g. connecting to the default
LPD port (515/TCP).

Successful exploitation may allow the execution of arbitrary code but
requires that the LPD daemon is enabled (disabled by default) and that
the attacker can control the hostname of the router.

SOLUTION:
Update to 12.2(18)SXF11, 12.4(16a), or 12.4(2)T6.

PROVIDED AND/OR DISCOVERED BY:
Andy Davis, IRM Plc.

ORIGINAL ADVISORY:
IRM Plc.:
http://www.irmplc.com/index.php/155-Advisory-024

Cisco:
http://www.cisco.com/warp/public/707/cisco-sr-20071010-lpd.shtml

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