Input validation error in Kerberos 5 - CVE-2011-0285
Published: April 15, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45126
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2011-0285
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: MIT
Affected software:
Kerberos 5
Kerberos 5
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT Kerberos 5 (aka krb5) 1.7 through 1.9 frees an invalid pointer, which allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted request that triggers an error condition.
How to mitigate CVE-2011-0285
Install update from vendor's website.
Sources
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=621726
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=6899
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058181.html
- http://osvdb.org/71789
- http://secunia.com/advisories/44125
- http://secunia.com/advisories/44181
- http://secunia.com/advisories/44196
- http://securityreason.com/securityalert/8200
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-004.txt
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:077
- http://www.redhat.com/support/errata/RHSA-2011-0447.html
- http://www.securityfocus.com/archive/1/517484/100/0/threaded
- http://www.securityfocus.com/bid/47310
- http://www.securitytracker.com/id?1025320
- http://www.vupen.com/english/advisories/2011/0936
- http://www.vupen.com/english/advisories/2011/0986
- http://www.vupen.com/english/advisories/2011/0997
- https://hermes.opensuse.org/messages/8086843