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Hash: SHA1 |
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GENTOO LINUX SECURITY ANNOUNCEMENT 200303-26 |
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|
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PACKAGE : openafs |
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SUMMARY : cryptographic weakness in Kerberos v4 |
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DATE : 2003-03-30 15:50 UTC |
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EXPLOIT : remote |
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VERSIONS AFFECTED : <1.3.2-r1 |
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FIXED VERSION : >=1.3.2-r1 |
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CVE : CAN-2003-0139 |
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|
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|
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- From advisory: |
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"A cryptographic weakness in version 4 of the Kerberos protocol allows an |
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attacker to use a chosen-plaintext attack to impersonate any principal in a |
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realm. OpenAFS kaserver implements version 4 of the Kerberos protocol, and |
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therefore is vulnerable. An attacker that knows a shared cross-realm key |
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between any remote realm and the local realm can impersonate any principal in |
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the local realm to AFS database servers and file servers in the local cell, |
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and other services in the local realm. An attacker that can create arbitrary |
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principal names in a realm can also impersonate any principal in that realm." |
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|
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Read the full advisory at |
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http://www.openafs.org/pages/security/OPENAFS-SA-2003-001.txt |
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|
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SOLUTION |
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|
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It is recommended that all Gentoo Linux users who are running |
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net-fs/openafs upgrade to openafs-1.3.2-r1 as follows: |
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|
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emerge sync |
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emerge openafs |
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emerge clean |
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|
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aliz@g.o - GnuPG key is available at http://cvs.gentoo.org/~aliz |
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rphillips@g.o |
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