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CVE-2011-2059

5.0 · MEDIUM

The ipv6 component in Cisco IOS before 15.1(4)M1.3 allows remote attackers to conduct fingerprinting attacks and obtain potentially sensitive information about the presence of the IOS operating sys…

Published Oct 22, 2011ciscoCWE-200EPSS 1.56%

Overview

CVE-2011-2059 is a medium-severity vulnerability affecting cisco ios. It was published on October 22, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The ipv6 component in Cisco IOS before 15.1(4)M1.3 allows remote attackers to conduct fingerprinting attacks and obtain potentially sensitive information about the presence of the IOS operating system via an ICMPv6 Echo Request packet containing a Hop-by-Hop (HBH) extension header (EH) with a 0x0c01050c value in the PadN option data, aka Bug ID CSCtq02219.

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
ciscoios>= 0, < 15.1\(4\)m1.3Affected

References

Refblogs.cisco.com/security/1999tcp-redux-the-ipv6-flavorReftools.cisco.com/security/center/viewIpsSignature.x?signatureId=36606&signatureSubId=0Refblogs.cisco.com/security/1999tcp-redux-the-ipv6-flavorReftools.cisco.com/security/center/viewIpsSignature.x?signatureId=36606&signatureSubId=0

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2059?

CVE-2011-2059 is a medium-severity vulnerability affecting cisco ios. It was published on October 22, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2011-2059?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-2059?

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-2011-2059?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2059 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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