From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Mar 25 2010 - 21:57:19 CDT

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  Secunia CSI
+ Microsoft SCCM
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= Extensive Patch Management

http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

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TITLE:
Cisco IOS Label Distribution Protocol Denial of Service

SECUNIA ADVISORY ID:
SA39065

VERIFY ADVISORY:
http://secunia.com/advisories/39065/

DESCRIPTION:
A vulnerability has been reported in Cisco IOS, which can be
exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error when processing Label
Distribution Protocol (LDP) UDP packets and can be exploited to cause
a device reload or restart the "mpls_ldp" Cisco IOS XR process.

Successful exploitation requires that a device is configured for
Multiprotocol Label Switching (MPLS) and supports the Tag
Distribution Protocol (TDP) or LDP.

SOLUTION:
Update to a fixed version (please see the vendor's advisory for
details).

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.cisco.com/warp/public/707/cisco-sa-20100324-ldp.shtml

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