Cisco IOS 12.x Label Distribution Protocol denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Cisco IOS 12.x. Affected by this vulnerability is an unknown functionality of the component Label Distribution Protocol. Executing a manipulation can lead to denial of service. The identification of this vulnerability is CVE-2010-0576. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS 12.x (Router Operating System). This vulnerability affects an unknown code block of the component Label Distribution Protocol. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

Unspecified vulnerability in Cisco IOS 12.0 through 12.4, IOS XE 2.1.x through 2.3.x before 2.3.2, and IOS XR 3.2.x through 3.4.3, when Multiprotocol Label Switching (MPLS) and Label Distribution Protocol (LDP) are enabled, allows remote attackers to cause a denial of service (device reload or process restart) via a crafted LDP packet, aka Bug IDs CSCsz45567 and CSCsj25893.

The weakness was shared 03/25/2010 with Cisco (Website). The advisory is available at cisco.com. This vulnerability was named CVE-2010-0576 since 02/10/2010. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 71434 (Cisco IOS XR Software Multiprotocol Label Switching Packet Vulnerability (cisco-sa-20100324-ldp)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43180 (Cisco IOS Software Multiprotocol Label Switching Packet Vulnerability (cisco-sa-20100324-ldp)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (57143), Tenable (71434), SecurityFocus (BID 38938†), OSVDB (63188†) and Secunia (SA39065†). The entries VDB-4115, VDB-4116, VDB-4112 and VDB-4113 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71434
Nessus Name: Cisco IOS XR Software Multiprotocol Label Switching Packet Vulnerability (cisco-sa-20100324-ldp)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: cisco.com

Timelineinfo

02/10/2010 🔍
03/24/2010 +42 days 🔍
03/24/2010 +0 days 🔍
03/24/2010 +0 days 🔍
03/24/2010 +0 days 🔍
03/25/2010 +1 days 🔍
03/25/2010 +0 days 🔍
03/25/2010 +0 days 🔍
03/25/2010 +0 days 🔍
04/19/2010 +24 days 🔍
12/14/2013 +1335 days 🔍
05/03/2026 +4523 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: Cisco
Status: Confirmed

CVE: CVE-2010-0576 (🔍)
GCVE (CVE): GCVE-0-2010-0576
GCVE (VulDB): GCVE-100-4114
X-Force: 57143 - Cisco IOS LDP denial of service, Medium Risk
SecurityFocus: 38938 - Cisco IOS Multiprotocol Label Switching (MPLS) Malformed Packet Denial of Service Vulnerability
Secunia: 39065 - Cisco IOS Label Distribution Protocol Denial of Service, Less Critical
OSVDB: 63188 - Cisco IOS Label Distribution Protocol (LDP) Hello Message Handling Remote DoS
SecurityTracker: 1023740 - Cisco IOS MPLS LDP Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 25158 - [cisco-sa-20100324-ldp] Cisco IOS MPLS Remote DoS Vulnerability via a Malformed Packet, High
Vupen: ADV-2010-0707

See also: 🔍

Entryinfo

Created: 04/19/2010 02:00
Updated: 05/03/2026 09:15
Changes: 04/19/2010 02:00 (82), 02/22/2017 10:47 (10), 03/17/2021 19:38 (3), 02/01/2025 20:08 (16), 05/03/2026 09:15 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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