CVE-2011-1529: Input Validation
First published: Thu Oct 20 2011(Updated: )
The lookup_lockout_policy function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the db2 (aka Berkeley DB) or LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that trigger certain process_as_req errors.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MIT Kerberos 5 | =1.8 | |
| MIT Kerberos 5 | =1.8.1 | |
| MIT Kerberos 5 | =1.8.2 | |
| MIT Kerberos 5 | =1.8.3 | |
| MIT Kerberos 5 | =1.8.4 | |
| MIT Kerberos 5 | =1.9 | |
| MIT Kerberos 5 | =1.9.1 |
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Reference Links
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:160
- http://www.redhat.com/support/errata/RHSA-2011-1379.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:159
- http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00009.html
- http://www.kb.cert.org/vuls/id/659251
Frequently Asked Questions
What is the severity of CVE-2011-1529?
CVE-2011-1529 is classified as a medium severity vulnerability due to its potential for causing denial of service.
How do I fix CVE-2011-1529?
To fix CVE-2011-1529, upgrade to MIT Kerberos 5 versions 1.8.5 or 1.9.2 or later.
Which versions of MIT Kerberos 5 are affected by CVE-2011-1529?
CVE-2011-1529 affects MIT Kerberos 5 versions 1.8 through 1.8.4 and 1.9 through 1.9.1.
What type of attack does CVE-2011-1529 enable?
CVE-2011-1529 allows remote attackers to exploit a NULL pointer dereference leading to a daemon crash.
What components of MIT Kerberos 5 are impacted by CVE-2011-1529?
The lookup_lockout_policy function in the Key Distribution Center (KDC) is impacted by CVE-2011-1529.
- agent/weakness
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/severity
- agent/last-modified-date
- agent/description
- agent/event
- agent/first-publish-date
- collector/nvd-historical
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/tags
- agent/source
- vendor/mit
- canonical/mit kerberos 5
- version/mit kerberos 5/1.8
- version/mit kerberos 5/1.8.1
- version/mit kerberos 5/1.8.2
- version/mit kerberos 5/1.8.3
- version/mit kerberos 5/1.8.4
- version/mit kerberos 5/1.9
- version/mit kerberos 5/1.9.1