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CVE-2011-4327

5.5 · MEDIUM

ssh-keysign.c in ssh-keysign in OpenSSH before 5.8p2 on certain platforms executes ssh-rand-helper with unintended open file descriptors, which allows local users to obtain sensitive key informatio…

Published Feb 3, 2014openbsdCWE-200EPSS 0.42%

Overview

CVE-2011-4327 is a medium-severity vulnerability affecting openbsd openssh. It was published on February 3, 2014 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

ssh-keysign.c in ssh-keysign in OpenSSH before 5.8p2 on certain platforms executes ssh-rand-helper with unintended open file descriptors, which allows local users to obtain sensitive key information via the ptrace system call.

Remediation

Check the references section for vendor advisories and patches from openbsd. Update openssh 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
openbsdopenssh0Affected

References

Refwww.openssh.com/txt/portable-keysign-rand-helper.advRefbugzilla.redhat.com/show_bug.cgi?id=755640Refwww.openssh.com/txt/portable-keysign-rand-helper.advRefbugzilla.redhat.com/show_bug.cgi?id=755640

How CyberStrike helps

Frequently asked questions

What is CVE-2011-4327?

CVE-2011-4327 is a medium-severity vulnerability affecting openbsd openssh. It was published on February 3, 2014 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2011-4327?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2011-4327?

Check the references section for vendor advisories and patches from openbsd. Update openssh 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-2011-4327?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4327 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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