CVE-2014-5353: Null Pointer Dereference
First published: Mon Dec 15 2014(Updated: )
The krb5_ldap_get_password_policy_from_dn function in plugins/kdb/ldap/libkdb_ldap/ldap_pwd_policy.c in MIT Kerberos 5 (aka krb5) before 1.13.1, when the KDC uses LDAP, allows remote authenticated users to cause a denial of service (daemon crash) via a successful LDAP query with no results, as demonstrated by using an incorrect object type for a password policy.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/krb5 | <=1.8.3+dfsg-4squeeze7<=1.8.3+dfsg-4 | |
| debian/krb5 | 1.18.3-6+deb11u4 1.18.3-6+deb11u5 1.20.1-2+deb12u1 1.20.1-2+deb12u2 1.21.3-3 | |
| Kerberos | <1.13.1 | |
| Red Hat Enterprise Linux Desktop | =6.0 | |
| Red Hat Enterprise Linux Server EUS | =6.6 | |
| Red Hat Enterprise Linux Server EUS | =7.3 | |
| Red Hat Enterprise Linux Server EUS | =7.4 | |
| Red Hat Enterprise Linux Server EUS | =7.5 | |
| Red Hat Enterprise Linux Server EUS | =7.6 | |
| Red Hat Enterprise Linux Server EUS | =7.7 | |
| Red Hat Enterprise Linux Server | =6.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Server | =6.6 | |
| Red Hat Enterprise Linux Server | =7.3 | |
| Red Hat Enterprise Linux Server | =7.4 | |
| Red Hat Enterprise Linux Server | =7.6 | |
| Red Hat Enterprise Linux Server | =7.7 | |
| Red Hat Enterprise Linux Server | =6.6 | |
| Red Hat Enterprise Linux Server | =7.3 | |
| Red Hat Enterprise Linux Server | =7.6 | |
| Red Hat Enterprise Linux Server | =7.7 | |
| Red Hat Enterprise Linux Workstation | =6.0 | |
| Fedora | =22 | |
| Debian | =7.0 | |
| Ubuntu | =10.04 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =14.10 | |
| Oracle Solaris and Zettabyte File System (ZFS) | =10 | |
| Oracle Solaris and Zettabyte File System (ZFS) | =11.2 | |
| SUSE Linux | =13.1 | |
| SUSE Linux | =13.2 |
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Reference Links
- https://github.com/krb5/krb5/commit/d1f707024f1d0af6e54a18885322d70fa15ec4d3
- https://security-tracker.debian.org/tracker/CVE-2014-5353
- https://security-tracker.debian.org/tracker/CVE-2014-5354
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=773226
- http://advisories.mageia.org/MGASA-2014-0536.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155828.html
- http://lists.opensuse.org/opensuse-updates/2015-03/msg00061.html
- http://rhn.redhat.com/errata/RHSA-2015-0439.html
- http://rhn.redhat.com/errata/RHSA-2015-0794.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:009
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://www.securityfocus.com/bid/71679
- http://www.securitytracker.com/id/1031376
- http://www.ubuntu.com/usn/USN-2498-1
- https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html
Frequently Asked Questions
What is the severity of CVE-2014-5353?
CVE-2014-5353 is classified as a denial of service vulnerability that allows remote authenticated users to crash the KDC when it utilizes LDAP.
How do I fix CVE-2014-5353?
To mitigate CVE-2014-5353, upgrade to versions krb5 1.13.1 or later, or to the specified patched versions from your distribution.
Which versions of MIT Kerberos 5 are affected by CVE-2014-5353?
CVE-2014-5353 affects MIT Kerberos 5 versions before 1.13.1.
Can CVE-2014-5353 be exploited remotely?
Yes, CVE-2014-5353 can be exploited by remote authenticated users through specially crafted LDAP queries.
What systems are typically affected by CVE-2014-5353?
Affected systems include various Linux distributions using MIT Kerberos 5 versions prior to 1.13.1.
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