critical
9.3
CWE
362 415
Advisory Published
CVE Published
Updated

CVE-2006-5051: Race Condition

First published: Wed Sep 27 2006(Updated: )

OpenSSH 4.4 was released and mentions: * Fix an unsafe signal hander reported by Mark Dowd. The signal handler was vulnerable to a race condition that could be exploited to perform a pre-authentication denial of service. On portable OpenSSH, this vulnerability could theoretically lead to pre-authentication remote code execution if GSSAPI authentication is enabled, but the likelihood of successful exploitation appears remote. This could only affect RHEL4 as previous RHEL did not support GSSAPI

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/RHSA-2006<0697
0697
OpenSSH=3.8
OpenSSH=3.8.1p1
OpenSSH=3.2.2
OpenSSH=3.1
OpenSSH=3.0.2p1
OpenSSH=3.8.1
OpenSSH=2.1.1
OpenSSH=3.7.1p2
OpenSSH=3.2.3p1
OpenSSH=3.1p1
OpenSSH=2.5.1
OpenSSH=2.9.9p2
OpenSSH=3.6.1p2
OpenSSH=3.9
OpenSSH=3.0
OpenSSH=1.2.1
OpenSSH=2.2
OpenSSH=3.2
OpenSSH=3.6
OpenSSH=1.2.3
OpenSSH=3.7
OpenSSH=4.0p1
OpenSSH=3.5p1
OpenSSH=3.0.1p1
OpenSSH=3.7.1p1
OpenSSH=2.1
OpenSSH=1.2
OpenSSH=3.3
OpenSSH=3.2.2p1
OpenSSH=3.9.1p1
OpenSSH=3.0.2
OpenSSH=3.4p1
OpenSSH=3.6.1p1
OpenSSH=3.0.1
OpenSSH=2.9.9
OpenSSH=3.6.1
OpenSSH=4.1p1
OpenSSH=1.2.2
OpenSSH=4.2p1
OpenSSH=2.9p1
OpenSSH=2.9
OpenSSH=3.7.1
OpenSSH=1.2.27
OpenSSH=4.2
OpenSSH=2.5.2
OpenSSH=2.3
OpenSSH=3.4
OpenSSH=4.3p1
OpenSSH=3.5
OpenSSH=2.5
OpenSSH=3.0p1
OpenSSH=3.3p1
OpenSSH=4.3
OpenSSH=4.0
OpenSSH=3.9.1
OpenSSH=2.9p2
OpenSSH<=4.4
Debian=3.1
Apple iOS and macOS<10.3.9
Apple iOS and macOS>=10.4<=10.4.8
Apple macOS Server<10.3.9
Apple macOS Server>=10.4<=10.4.8

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2006-5051?

    CVE-2006-5051 is classified as a medium severity vulnerability due to its potential for a pre-authentication denial of service.

  • How do I fix CVE-2006-5051?

    To mitigate CVE-2006-5051, update OpenSSH to a version beyond 4.4, which contains the necessary patches.

  • What versions of OpenSSH are affected by CVE-2006-5051?

    Affected versions include OpenSSH 4.4 and earlier, along with various earlier versions from the 3.x series and below.

  • Can CVE-2006-5051 lead to an actual exploit?

    Yes, it can be exploited to create a denial of service condition, affecting the availability of the affected systems.

  • Is CVE-2006-5051 specific to any operating system?

    CVE-2006-5051 impacts multiple operating systems that use vulnerable versions of OpenSSH, including Red Hat, Debian, and macOS.

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