CVE-2006-1354: EAP-MSCHAPv2 vulnerability

[William Grant]

Binary package hint: freeradius

A validation issue exists with the EAP-MSCHAPv2 module in all versions from 1.0.0 (where the module first appeared) to 1.1.0. Insufficient input validation was being done in the EAP-MSCHAPv2 state machine. A malicious attacker could manipulate their EAP-MSCHAPv2 client state machine to potentially convince the server to bypass authentication checks. This bypassing could also result in the server crashing. We recommend that administrators upgrade immediately.

Only Dapper is unfixed, and I'll roll this in with the fix for bug #106006.

[Josh (josh-redhat-bugs)]

FreeRADIUS authentication bypass

A bug in the EAP-MSCHAPv2 module could allow an attacker to
improperly authenticate as an aribitrary user.

http://www.freeradius.org/security.html

This issue also affects RHEL3

[Josh (josh-redhat-bugs)]

Created attachment 126403
Patch from upstream CVS

[Red (red-redhat-bugs)]

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0271.html