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>> Cisco IOS Line Printer Daemon (LPD) Protocol Stack Overflow Vulnerability

Title : Cisco IOS Line Printer Daemon (LPD) Protocol Stack Overflow Vulnerability
VUPEN ID : VUPEN/ADV-2007-3457
CVE ID : CVE-2007-5381
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-10-10


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

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.

Affected Products

Cisco IOS versions 12.x

Solution

Upgrade to Cisco IOS version 12.2(18)SXF11, 12.4(16a), 12.4(2)T6 or later :
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsj86725

References

http://www.vupen.com/english/advisories/2007/3457
http://www.cisco.com/warp/public/707/cisco-sr-20071010-lpd.shtml
http://www.irmplc.com/index.php/155-Advisory-024

Credits

Vulnerability reported by Andy Davis (IRM).

ChangeLog

2007-10-10 : Initial release

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