CVE-2011-1528: Input Validation
First published: Thu Oct 20 2011(Updated: )
The krb5_ldap_lockout_audit 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 LDAP back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, related to the locked_check_p function. NOTE: the Berkeley DB vector is covered by CVE-2011-4151.
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
- https://bugs.launchpad.net/ubuntu/+source/krb5/+bug/715579
- 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-2011-1528?
CVE-2011-1528 is classified as a high severity vulnerability due to its potential to cause a denial of service.
How do I fix CVE-2011-1528?
To mitigate CVE-2011-1528, upgrade to the latest version of MIT Kerberos 5 that addresses this issue, specifically versions later than 1.8.4 and 1.9.1.
What products are affected by CVE-2011-1528?
CVE-2011-1528 affects MIT Kerberos 5 versions 1.8 through 1.8.4 and 1.9 through 1.9.1 that utilize an LDAP back end.
What causes the denial of service in CVE-2011-1528?
The denial of service in CVE-2011-1528 is caused by an assertion failure in the krb5_ldap_lockout_audit function.
Can CVE-2011-1528 be exploited remotely?
Yes, CVE-2011-1528 can be exploited by remote attackers to trigger the denial of service.
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- agent/softwarecombine
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- source/MITRE
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- agent/severity
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- collector/nvd-historical
- agent/software-canonical-lookup-request
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- 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