Vulnerability CVE-2002-2443
Published: 2013-05-29

Description:
schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly validate UDP packets before sending responses, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by krb_pingpong.nasl, a related issue to CVE-1999-0103.

See advisories in our WLB2 database:
Topic
Author
Date
High
Kerberos kpasswd UDP ping-pong vulnerability
Vincent Danen
14.05.2013

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
MIT -> Kerberos 

 References:
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7637
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105879.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105978.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/106698.html
http://lists.opensuse.org/opensuse-updates/2013-07/msg00004.html
http://lists.opensuse.org/opensuse-updates/2013-07/msg00007.html
http://rhn.redhat.com/errata/RHSA-2013-0942.html
http://www.debian.org/security/2013/dsa-2701
http://www.mandriva.com/security/advisories?name=MDVSA-2013:166
http://www.ubuntu.com/usn/USN-2810-1
https://bugzilla.redhat.com/show_bug.cgi?id=962531
https://github.com/krb5/krb5/commit/cf1a0c411b2668c57c41e9c4efd15ba17b6b322c
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