FreeBSD : freeradius -- authentication bypass vulnerability (1a216dfd-f710-11da-9156-000e0c2e438a)

High Nessus Plugin ID 21678


The remote FreeBSD host is missing a security-related update.


The freeradius development team reports :

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


Update the affected package.

See Also

Plugin Details

Severity: High

ID: 21678

File Name: freebsd_pkg_1a216dfdf71011da9156000e0c2e438a.nasl

Version: $Revision: 1.19 $

Type: local

Published: 2006/06/11

Modified: 2013/06/21

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:freeradius, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2006/06/08

Vulnerability Publication Date: 2006/06/03

Reference Information

CVE: CVE-2006-1354

BID: 17171