CVE-2014-5352: Use After Free
First published: Thu Feb 19 2015(Updated: )
The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly maintain security-context handles, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via crafted GSSAPI traffic, as demonstrated by traffic to kadmind.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MIT Kerberos 5 Application | =1.11 | |
| MIT Kerberos 5 Application | =1.11.1 | |
| MIT Kerberos 5 Application | =1.11.2 | |
| MIT Kerberos 5 Application | =1.11.3 | |
| MIT Kerberos 5 Application | =1.11.4 | |
| MIT Kerberos 5 Application | =1.11.5 | |
| MIT Kerberos 5 Application | =1.12 | |
| MIT Kerberos 5 Application | =1.12.1 | |
| MIT Kerberos 5 Application | =1.12.2 | |
| MIT Kerberos 5 Application | =1.13 |
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Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151103.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151437.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00016.html
- http://lists.opensuse.org/opensuse-updates/2015-02/msg00044.html
- http://rhn.redhat.com/errata/RHSA-2015-0439.html
- http://rhn.redhat.com/errata/RHSA-2015-0794.html
- http://web.mit.edu/kerberos/advisories/2015-001-patch-r113.txt
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt
- http://www.debian.org/security/2015/dsa-3153
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:069
- http://www.securityfocus.com/bid/72495
- http://www.ubuntu.com/usn/USN-2498-1
- https://github.com/krb5/krb5/commit/82dc33da50338ac84c7b4102dc6513d897d0506a
Frequently Asked Questions
What is the severity of CVE-2014-5352?
CVE-2014-5352 has been classified as a medium severity vulnerability due to its potential to allow remote authenticated users to affect system integrity.
How do I fix CVE-2014-5352?
To fix CVE-2014-5352, upgrade to MIT Kerberos 5 version 1.13.1 or later, which contains the necessary patches.
Which versions of MIT Kerberos 5 are affected by CVE-2014-5352?
CVE-2014-5352 affects MIT Kerberos 5 versions from 1.11.0 to 1.13.0, excluding 1.13.1 and later.
What impact does CVE-2014-5352 have on security contexts?
CVE-2014-5352 impacts the maintenance of security-context handles, potentially compromising security and authentication processes.
Can I mitigate CVE-2014-5352 without updating?
Mitigating CVE-2014-5352 without updating is difficult; the best practice is to apply the available updates to ensure security.
- agent/weakness
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/severity
- agent/last-modified-date
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/tags
- vendor/mit
- canonical/mit kerberos 5 application
- version/mit kerberos 5 application/1.11
- version/mit kerberos 5 application/1.11.1
- version/mit kerberos 5 application/1.11.2
- version/mit kerberos 5 application/1.11.3
- version/mit kerberos 5 application/1.11.4
- version/mit kerberos 5 application/1.11.5
- version/mit kerberos 5 application/1.12
- version/mit kerberos 5 application/1.12.1
- version/mit kerberos 5 application/1.12.2
- version/mit kerberos 5 application/1.13