97410 2003-04-02 04:12 /51 rader/ Daniel Ahlberg <aliz@gentoo.org>
Importerad: 2003-04-02 04:12 av Brevbäraren
Extern mottagare: bugtraq@securityfocus.com
Mottagare: Bugtraq (import) <4276>
Ärende: GLSA: openafs (200303-26)
------------------------------------------------------------
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- - ---------------------------------------------------------------------
GENTOO LINUX SECURITY ANNOUNCEMENT 200303-26
- - ---------------------------------------------------------------------
PACKAGE : openafs
SUMMARY : cryptographic weakness in Kerberos v4
DATE : 2003-03-30 15:50 UTC
EXPLOIT : remote
VERSIONS AFFECTED : <1.3.2-r1
FIXED VERSION : >=1.3.2-r1
CVE : CAN-2003-0139
- - ---------------------------------------------------------------------
- From advisory: "A cryptographic weakness in version 4 of the
Kerberos protocol allows an attacker to use a chosen-plaintext attack
to impersonate any principal in a realm. OpenAFS kaserver implements
version 4 of the Kerberos protocol, and therefore is vulnerable. An
attacker that knows a shared cross-realm key between any remote realm
and the local realm can impersonate any principal in the local realm
to AFS database servers and file servers in the local cell, and other
services in the local realm. An attacker that can create arbitrary
principal names in a realm can also impersonate any principal in that
realm."
Read the full advisory at
http://www.openafs.org/pages/security/OPENAFS-SA-2003-001.txt
SOLUTION
It is recommended that all Gentoo Linux users who are running
net-fs/openafs upgrade to openafs-1.3.2-r1 as follows:
emerge sync
emerge openafs
emerge clean
- - ---------------------------------------------------------------------
aliz@gentoo.org - GnuPG key is available at http://cvs.gentoo.org/~aliz
rphillips@gentoo.org
- - ---------------------------------------------------------------------
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)
iD8DBQE+hxJFfT7nyhUpoZMRAsX+AJ9EpVL8yVWv6zKDub9dgBf8kNDw6ACfZcyL
gCOQAEJIogc9cC4AnK7UMzo=
=01pX
-----END PGP SIGNATURE-----
(97410) /Daniel Ahlberg <aliz@gentoo.org>/(Ombruten)