GLSA 200411-09: shadow: Unauthorized modification of account information
Severity: | low |
Title: | shadow: Unauthorized modification of account information |
Date: | 11/04/2004 |
Bugs: |
|
ID: | 200411-09 |
Synopsis
A flaw in the chfn and chsh utilities might allow modification of account properties by unauthorized users.Background
shadow provides a set of utilities to deal with user accounts.
Affected packages
Package | Vulnerable | Unaffected | Architecture(s) |
---|---|---|---|
sys-apps/shadow | < 4.0.5-r1 | >= 4.0.5-r1 | All supported architectures |
Description
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.
Resolution
All shadow users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.0.5-r1"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.