Gentoo Archives: gentoo-announce

From: Daniel Ahlberg <aliz@g.o>
To: gentoo-announce@g.o
Subject: GLSA: openafs (200303-26)
Date: Sun, 30 Mar 2003 16:32:46
Message-Id: 20030330155029.D0586339AA@mail1.tamperd.net
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5 GENTOO LINUX SECURITY ANNOUNCEMENT 200303-26
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7
8 PACKAGE : openafs
9 SUMMARY : cryptographic weakness in Kerberos v4
10 DATE : 2003-03-30 15:50 UTC
11 EXPLOIT : remote
12 VERSIONS AFFECTED : <1.3.2-r1
13 FIXED VERSION : >=1.3.2-r1
14 CVE : CAN-2003-0139
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17
18 - From advisory:
19 "A cryptographic weakness in version 4 of the Kerberos protocol allows an
20 attacker to use a chosen-plaintext attack to impersonate any principal in a
21 realm. OpenAFS kaserver implements version 4 of the Kerberos protocol, and
22 therefore is vulnerable. An attacker that knows a shared cross-realm key
23 between any remote realm and the local realm can impersonate any principal in
24 the local realm to AFS database servers and file servers in the local cell,
25 and other services in the local realm. An attacker that can create arbitrary
26 principal names in a realm can also impersonate any principal in that realm."
27
28 Read the full advisory at
29 http://www.openafs.org/pages/security/OPENAFS-SA-2003-001.txt
30
31 SOLUTION
32
33 It is recommended that all Gentoo Linux users who are running
34 net-fs/openafs upgrade to openafs-1.3.2-r1 as follows:
35
36 emerge sync
37 emerge openafs
38 emerge clean
39
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41 aliz@g.o - GnuPG key is available at http://cvs.gentoo.org/~aliz
42 rphillips@g.o
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