GLSA-200512-02 : Webmin, Usermin: Format string vulnerability

High Nessus Plugin ID 20281


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200512-02 (Webmin, Usermin: Format string vulnerability)

Jack Louis discovered that the Webmin and Usermin '' web server component is vulnerable to a Perl format string vulnerability. Login with the supplied username is logged via the Perl 'syslog' facility in an unsafe manner.
Impact :

A remote attacker can trigger this vulnerability via a specially crafted username containing format string data. This can be exploited to consume a large amount of CPU and memory resources on a vulnerable system, and possibly to execute arbitrary code of the attacker's choice with the permissions of the user running Webmin.
Workaround :

There is no known workaround at this time.


All Webmin users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-admin/webmin-1.250' All Usermin users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-admin/usermin-1.180'

See Also

Plugin Details

Severity: High

ID: 20281

File Name: gentoo_GLSA-200512-02.nasl

Version: $Revision: 1.13 $

Type: local

Published: 2005/12/08

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:usermin, p-cpe:/a:gentoo:linux:webmin, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2005/12/07

Vulnerability Publication Date: 2005/11/29

Exploitable With


Core Impact

Reference Information

CVE: CVE-2005-3912

OSVDB: 21222

GLSA: 200512-02