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Alerts This Week
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Gentoo: 200303-26 Moderate: OpenAFS Cryptographic Weakness Remote Exploit

gentoo
Calendar Grey March 30, 2003
Dist Gentoo Esm H88
A vulnerability in the Kerberos v4 authentication allows attackers to impersonate legitimate users in the OpenAFS system on Gentoo. Patching is urgent.
A cryptographic weakness in version 4 of the Kerberos protocol allows anattacker to use a chosen-plaintext attack to impersonate any principal in arealm

Summary


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GENTOO LINUX SECURITY ANNOUNCEMENT 200303-26
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>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 openafs
SOLUTION
It is recommended that all Gentoo Linux users who are running ne...

Read the Full Advisory

Resolution

References

Availability

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Concerns

Severity
important
Lowest
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Critical

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

Synopsis

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