Cisco IOS XR Software Multiprotocol Label Switching Packet Vulnerability (cisco-sa-20100324-ldp)

high Nessus Plugin ID 71434


The remote device is missing a vendor-supplied security patch.


A device running Cisco IOS XR Software is vulnerable to a remote denial of service (DoS) condition if it is configured for Multiprotocol Label Switching (MPLS) and has support for Label Distribution Protocol (LDP). A crafted LDP UDP packet can cause an affected device running Cisco IOS XR Software to restart the mpls_ldp process. A system is vulnerable if configured with either LDP or Tag Distribution Protocol (TDP). Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available.


Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20100324-ldp.

See Also

Plugin Details

Severity: High

ID: 71434

File Name: cisco-sa-20100324-ldp-iosxr.nasl

Version: 1.7

Type: combined

Family: CISCO

Published: 12/14/2013

Updated: 4/8/2021

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.4


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2010-0576

Vulnerability Information

CPE: cpe:/o:cisco:ios_xr

Required KB Items: Host/Cisco/IOS-XR/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2010

Vulnerability Publication Date: 3/24/2010

Reference Information

CVE: CVE-2010-0576

BID: 38938

CISCO-SA: cisco-sa-20100324-ldp