VDB-58803 · CVE-2011-0945 · BID 49829

Cisco IOS up to 12.2srb resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Cisco IOS up to 12.2srb (Router Operating System). It has been classified as critical. This affects an unknown part. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

Memory leak in the Data-link switching (aka DLSw) feature in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xS before 3.1.3S and 3.2.xS before 3.2.1S, when implemented over Fast Sequence Transport (FST), allows remote attackers to cause a denial of service (memory consumption and device reload or hang) via a crafted IP protocol 91 packet, aka Bug ID CSCth69364.

The weakness was presented 10/03/2011 with Cisco (Website). It is possible to read the advisory at cisco.com. This vulnerability is uniquely identified as CVE-2011-0945 since 02/10/2011. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/21/2021).

The vulnerability scanner Nessus provides a plugin with the ID 56314 (Cisco IOS Software Data-Link Switching Vulnerability (cisco-sa-20110928-dlsw)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO.

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 vulnerability database at Tenable (56314). See 58807, 58806, 58804 and 58802 for similar entries.






  • commercial


  • end of life (version)

CPE 2.3info

CPE 2.2info


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

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



VulDB Base Score: 🔍
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NVD Base Score: 🔍


Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 56314
Nessus Name: Cisco IOS Software Data-Link Switching Vulnerability (cisco-sa-20110928-dlsw)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


02/10/2011 🔍
09/28/2011 +230 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 🔍
11/21/2021 +2435 days 🔍


Vendor: cisco.com

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

CVE: CVE-2011-0945 (🔍)
Vulnerability Center: 33364 - [cisco-sa-20110928-dlsw] Cisco IOS DLSw Implementation Remote DoS Vulnerability, Medium
SecurityFocus: 49829 - Cisco IOS Data-Link Switching Memory Leak Remote Denial of Service Vulnerability

See also: 🔍


Created: 03/23/2015 04:50 PM
Updated: 11/21/2021 01:14 AM
Changes: 03/23/2015 04:50 PM (54), 04/02/2017 02:09 PM (11), 11/21/2021 01:14 AM (3)
Complete: 🔍


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