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CVE-2011-4231

6.3 · MEDIUM

Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates in use, allows remote authenticated users to cause a denial of service (segmentation fault and device…

Published May 3, 2012ciscoCWE-20EPSS 0.59%

Overview

CVE-2011-4231 is a medium-severity vulnerability affecting cisco ios. It was published on May 3, 2012 and has a CVSS 2.0 base score of 6.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates in use, allows remote authenticated users to cause a denial of service (segmentation fault and device crash) via unspecified vectors, aka Bug ID CSCtq61128.

Remediation

Check the references section for vendor advisories and patches from cisco. Update ios to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refwww.cisco.com/en/US/docs/ios/15_1/release/notes/151-4MCAVS.htmlRefwww.cisco.com/en/US/docs/ios/ios_xe/3/release/notes/asr1k_caveats_34s.htmlRefwww.cisco.com/en/US/docs/ios/15_1/release/notes/151-4MCAVS.htmlRefwww.cisco.com/en/US/docs/ios/ios_xe/3/release/notes/asr1k_caveats_34s.html

How CyberStrike helps

Frequently asked questions

What is CVE-2011-4231?

CVE-2011-4231 is a medium-severity vulnerability affecting cisco ios. It was published on May 3, 2012 and has a CVSS 2.0 base score of 6.3 (MEDIUM).

How severe is CVE-2011-4231?

This vulnerability has a CVSS 2.0 base score of 6.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2011-4231?

Check the references section for vendor advisories and patches from cisco. Update ios to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-4231?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4231 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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