Joined: 25 Feb 2003
Location: Essen, Germany
|Posted: Thu Nov 04, 2004 11:00 pm Post subject: [ GLSA 200411-09 ] shadow: Unauthorized modification of acco
|Gentoo Linux Security Advisory
Title: shadow: Unauthorized modification of account information (GLSA 200411-09)
Date: November 04, 2004
Updated: November 05, 2004
A flaw in the chfn and chsh utilities might allow modification of account
properties by unauthorized users.
shadow provides a set of utilities to deal with user accounts.
Vulnerable: < 4.0.5-r1
Unaffected: >= 4.0.5-r1
Architectures: All supported architectures
Martin Schulze reported a flaw in the passwd_check() function in
"libmisc/pwdcheck.c" which is used by chfn and chsh.
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.
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"
shadow NEWS file
Last edited by GLSA on Wed Apr 24, 2013 4:18 am; edited 5 times in total