CVE-2013-1415: Null Pointer Dereference
First published: Tue Mar 05 2013(Updated: )
The pkinit_check_kdc_pkid function in plugins/preauth/pkinit/pkinit_crypto_openssl.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 and 1.11.x before 1.11.1 does not properly handle errors during extraction of fields from an X.509 certificate, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed KRB5_PADATA_PK_AS_REQ AS-REQ request.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MIT Kerberos 5 Application | <1.10.4 | |
| MIT Kerberos 5 Application | =1.11 | |
| openSUSE | =11.4 |
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Reference Links
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=7570
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=7577
- http://lists.opensuse.org/opensuse-updates/2013-03/msg00090.html
- http://secunia.com/advisories/55040
- http://web.mit.edu/kerberos/www/krb5-1.10/
- http://web.mit.edu/kerberos/www/krb5-1.11/
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:157
- https://github.com/krb5/krb5/commit/f249555301940c6df3a2cdda13b56b5674eebc2e
Frequently Asked Questions
What is the severity of CVE-2013-1415?
CVE-2013-1415 is classified as a moderate severity vulnerability.
How do I fix CVE-2013-1415?
To fix CVE-2013-1415, upgrade MIT Kerberos 5 to version 1.10.4 or later, or 1.11.1 or later.
What software is affected by CVE-2013-1415?
CVE-2013-1415 affects MIT Kerberos 5 versions prior to 1.10.4 and various 1.11.x versions before 1.11.1.
What is the nature of the vulnerability in CVE-2013-1415?
The vulnerability in CVE-2013-1415 is related to improper error handling during the extraction of fields from X.509 certificates.
Is there a workaround for CVE-2013-1415?
There are no known workarounds for CVE-2013-1415; updating to a secure version is recommended.
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