HylaFAX hfaxd with PAM Password Policy Bypass

High Nessus Plugin ID 20387


The remote fax server fails to properly validate passwords.


The remote host is running HylaFAX, a fax / pager server application for Linux / unix.

The version of HylaFAX installed on the remote host does not check passwords when authenticating users via hfaxd, its fax server. An attacker can exploit this issue to bypass authentication using a valid username and gain access to the system.


Rebuild HylaFAX with PAM support or upgrade to HylaFAX version 4.2.4 or later.

See Also



Plugin Details

Severity: High

ID: 20387

File Name: hylafax_auth_bypass.nasl

Version: $Revision: 1.15 $

Type: remote

Family: Misc.

Published: 2006/01/10

Modified: 2015/12/23

Dependencies: 14773

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Excluded KB Items: global_settings/supplied_logins_only

Exploit Available: true

Exploit Ease: No exploit is required

Exploited by Nessus: true

Vulnerability Publication Date: 2006/01/04

Reference Information

CVE: CVE-2005-3538

BID: 16150

OSVDB: 22245