high
7.8
CWE
476
Advisory Published
CVE Published
Updated

CVE-2014-4344: Null Pointer Dereference

First published: Tue Jul 22 2014(Updated: )

A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. An unauthenticated attacker could use this flaw to crash the server acceptor. It is reported that this issue affects version 1.5 and later. Upstream commit and further details: <a href="https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b">https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b</a>

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Debian=7.0
redhat enterprise Linux desktop=7.0
Red Hat Enterprise Linux HPC Node=7.0
redhat enterprise Linux server=7.0
redhat enterprise Linux workstation=7.0
Kerberos 5 (libkrb5)=1.10
Kerberos 5 (libkrb5)=1.10.1
Kerberos 5 (libkrb5)=1.10.2
Kerberos 5 (libkrb5)=1.10.3
Kerberos 5 (libkrb5)=1.10.4
Kerberos 5 (libkrb5)=1.11
Kerberos 5 (libkrb5)=1.11.1
Kerberos 5 (libkrb5)=1.11.2
Kerberos 5 (libkrb5)=1.11.3
Kerberos 5 (libkrb5)=1.11.4
Kerberos 5 (libkrb5)=1.11.5
Kerberos 5 (libkrb5)=1.12
Kerberos 5 (libkrb5)=1.12.1

Remedy

https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2014-4344?

    CVE-2014-4344 has a medium severity rating, as it allows an unauthenticated attacker to crash the server acceptor.

  • How do I fix CVE-2014-4344?

    To fix CVE-2014-4344, you should upgrade to the patched version of MIT Kerberos 5 or apply the relevant security patches provided by your operating system vendor.

  • Which versions of MIT Kerberos are affected by CVE-2014-4344?

    CVE-2014-4344 affects all versions of MIT Kerberos 5 starting from 1.5 and later.

  • What impact does CVE-2014-4344 have on a server?

    The impact of CVE-2014-4344 is that an attacker can exploit the NULL pointer dereference flaw to crash the server acceptor, leading to a denial of service.

  • What systems are impacted by CVE-2014-4344?

    CVE-2014-4344 impacts Debian GNU/Linux 7.0 and several versions of Red Hat Enterprise Linux, including server, desktop, HPC node, and workstation.

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