Cisco IOS XE up to 3.2.1s denial of service

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

A vulnerability, which was classified as critical, has been found in Cisco IOS XE up to 3.2.1s (Router Operating System). Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

Unspecified vulnerability in Cisco IOS 12.2SRE before 12.2(33)SRE4, 15.0, and 15.1, and IOS XE 2.1.x through 3.3.x, when an MPLS domain is configured, allows remote attackers to cause a denial of service (device crash) via a crafted IPv6 packet, related to an expired MPLS TTL, aka Bug ID CSCto07919.

The weakness was presented 10/03/2011 with Cisco (Website). The advisory is shared for download at cisco.com. This vulnerability is handled as CVE-2011-3274 since 08/29/2011. The exploitation is known to be easy. The attack can only be done within the local network. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/23/2021).

The vulnerability scanner Nessus provides a plugin with the ID 56317 (Cisco IOS Software IP Version 6 over Multiprotocol Label Switching Vulnerabilities (cisco-sa-20110928-ipv6mpls)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43217 (Cisco IOS Software IPv6 over MPLS Vulnerabilities (cisco-sa-20110928-ipv6mpls)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (56317), SecurityFocus (BID 49827†) and Vulnerability Center (SBV-33365†). See VDB-58816 for similar entry.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

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

VulDB Base Score: 6.5
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: 🔍

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56317
Nessus Name: Cisco IOS Software IP Version 6 over Multiprotocol Label Switching Vulnerabilities (cisco-sa-20110928-ipv6mpls)
Nessus File: 🔍
Nessus Risk: 🔍
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Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/29/2011 🔍
09/28/2011 +30 days 🔍
09/28/2011 +0 days 🔍
09/29/2011 +1 days 🔍
10/02/2011 +3 days 🔍
10/03/2011 +1 days 🔍
10/03/2011 +0 days 🔍
03/23/2015 +1267 days 🔍
11/23/2021 +2437 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: Cisco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-3274 (🔍)
SecurityFocus: 49827 - Cisco IOS IPv6 over MPLS Multiple Denial of Service Vulnerabilities
Vulnerability Center: 33365 - [cisco-sa-20110928-ipv6mpls] Cisco IOS Remote DoS Vulnerability via an IPv6 Packet, High

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 03/23/2015 04:50 PM
Updated: 11/23/2021 06:52 AM
Changes: 03/23/2015 04:50 PM (55), 04/07/2017 06:27 PM (12), 11/23/2021 06:52 AM (2)
Complete: 🔍
Cache ID: 18:73E:40

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