GLSA-200411-09 : shadow: Unauthorized modification of account information

Medium Nessus Plugin ID 15634


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


The remote host is affected by the vulnerability described in GLSA-200411-09 (shadow: Unauthorized modification of account information)

Martin Schulze reported a flaw in the passwd_check() function in 'libmisc/pwdcheck.c' which is used by chfn and chsh.
Impact :

A logged-in local user with an expired password may be able to use chfn and chsh to change his standard shell or GECOS information (full name, phone number...) without being required to change his password.
Workaround :

There is no known workaround at this time.


All shadow users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=sys-apps/shadow-4.0.5-r1'

See Also

Plugin Details

Severity: Medium

ID: 15634

File Name: gentoo_GLSA-200411-09.nasl

Version: $Revision: 1.15 $

Type: local

Published: 2004/11/05

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.6

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:shadow, cpe:/o:gentoo:linux

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

Patch Publication Date: 2004/11/04

Vulnerability Publication Date: 2004/10/27

Reference Information

CVE: CVE-2004-1001

OSVDB: 11173

GLSA: 200411-09