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Bug 236248 - CVE-2007-2028 Freeradius EAP-TTLS denial of service
Summary: CVE-2007-2028 Freeradius EAP-TTLS denial of service
Alias: None
Product: Fedora
Classification: Fedora
Component: freeradius
Version: 6
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Thomas Woerner
QA Contact:
Whiteboard: impact=moderate,source=freeradius,pub...
Depends On:
TreeView+ depends on / blocked
Reported: 2007-04-12 17:41 UTC by Josh Bressers
Modified: 2007-11-30 22:12 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2007-05-30 19:54:50 UTC

Attachments (Terms of Use)

Description Josh Bressers 2007-04-12 17:41:00 UTC
+++ This bug was initially created as a clone of Bug #236247 +++

A flaw was found in the way FreeRADIUS parses certain authentication requests.
The upstream description explain it as such:

    2007.04.10 v1.1.5, and earlier - A malicous 802.1x supplicant could send
    malformed Diameter format attributes inside of an EAP-TTLS tunnel. The
    server would reject the authentication request, but would leak one
    VALUE_PAIR data structure, of approximately 300 bytes. If an attacker
    performed the attack many times (e.g. thousands or more over a period of
    minutes to hours), the server could leak megabytes of memory, potentially
    leading to an "out of memory" condition, and early process exit.

    We recommend that administrators using EAP-TTLS upgrade immediately.
    This bug was found as part of the Coverity Scan project.

The EAP-TTLS support is not enabled by default in any FreeRADIUS

This flaw also affects FC5

-- Additional comment from on 2007-04-12 13:31 EST --
Created an attachment (id=152488)
Upstream Patch

Comment 1 Fedora Update System 2007-05-14 17:06:03 UTC
freeradius-1.1.3-2.fc6 has been pushed for fc6, which should resolve this issue.  If these problems are still present in this version, then please make note of it in this bug report.

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