low
3.5
CWE
189
Advisory Published
Updated

CVE-2011-5000

First published: Wed Apr 04 2012(Updated: )

The ssh_gssapi_parse_ename function in gss-serv.c in OpenSSH 5.8 and earlier, when gssapi-with-mic authentication is enabled, allows remote authenticated users to cause a denial of service (memory consumption) via a large value in a certain length field. NOTE: there may be limited scenarios in which this issue is relevant.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
OpenSSH=5.4
OpenSSH=3.8
OpenSSH=3.8.1p1
OpenSSH=4.3p2
OpenSSH=3.2.2
OpenSSH=3.1
OpenSSH=5.5
OpenSSH=3.0.2p1
OpenSSH=1.5.8
OpenSSH=5.3
OpenSSH=4.1
OpenSSH=3.8.1
OpenSSH=3.7.1p2
OpenSSH=4.8
OpenSSH=4.9
OpenSSH=3.2.3p1
OpenSSH=3.1p1
OpenSSH=3.6.1p2
OpenSSH=3.9
OpenSSH=3.0
OpenSSH=1.2.1
OpenSSH=3.2
OpenSSH=3.6
OpenSSH=4.7
OpenSSH=1.5.7
OpenSSH=1.2.3
OpenSSH=3.7
OpenSSH<=5.8
OpenSSH=4.0p1
OpenSSH=3.5p1
OpenSSH=3.0.1p1
OpenSSH=4.4
OpenSSH=3.7.1p1
OpenSSH=1.2
OpenSSH=5.2
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=3.6.1
OpenSSH=4.1p1
OpenSSH=5.7
OpenSSH=1.2.2
OpenSSH=4.2p1
OpenSSH=4.5
OpenSSH=3.7.1
OpenSSH=1.2.27
OpenSSH=4.2
OpenSSH=3.4
OpenSSH=4.4p1
OpenSSH=4.3p1
OpenSSH=3.5
OpenSSH=5.1
OpenSSH=3.0p1
OpenSSH=3.3p1
OpenSSH=5.6
OpenSSH=4.3
OpenSSH=4.0
OpenSSH=3.9.1
OpenSSH=5.0
OpenSSH=1.3
OpenSSH=1.5
OpenSSH=4.6

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-5000?

    CVE-2011-5000 is classified as a denial of service vulnerability.

  • How do I fix CVE-2011-5000?

    To fix CVE-2011-5000, upgrade to OpenSSH version 5.9 or later where the vulnerability is patched.

  • Who is affected by CVE-2011-5000?

    CVE-2011-5000 affects OpenSSH versions 5.8 and earlier, particularly those using gssapi-with-mic authentication.

  • What kind of attack can exploit CVE-2011-5000?

    CVE-2011-5000 can be exploited by remote authenticated users to cause excessive memory consumption, leading to denial of service.

  • Is CVE-2011-5000 a remote vulnerability?

    Yes, CVE-2011-5000 can be exploited remotely, as it targets authenticated users on the system.

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