Input validation error in Kerberos 5 - CVE-2012-1013
Published: June 7, 2012 / Updated: May 27, 2022
Vulnerability identifier: #VU44015
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2012-1013
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MIT
Affected software:
Kerberos 5
Kerberos 5
Detailed vulnerability description
The vulnerability allows remote authenticated administrators to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and daemon crash) via a KRB5_KDB_DISALLOW_ALL_TIX create request that lacks a password.
How to mitigate CVE-2012-1013
Install update from vendor's website.
Sources
- http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=7152
- http://mailman.mit.edu/pipermail/kerberos-announce/2012q2/000136.html
- http://rhn.redhat.com/errata/RHSA-2012-1131.html
- http://web.mit.edu/kerberos/krb5-1.10/
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:102
- http://www.securityfocus.com/bid/53784
- https://bugzilla.redhat.com/show_bug.cgi?id=827517
- https://github.com/krb5/krb5/commit/c5be6209311d4a8f10fda37d0d3f876c1b33b77b
- https://hermes.opensuse.org/messages/15083635