A shadow security update has been released
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Gentoo Linux Security Advisory GLSA 200411-09
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http://security.gentoo.org/
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Severity: Low
Title: shadow: Unauthorized modification of account information
Date: November 04, 2004
Bugs: #69212
ID: 200411-09
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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
-------------------------------------------------------------------
1 sys-apps/shadow < 4.0.5-r1 >= 4.0.5-r1
Description
==========
Martin Schulze reported a flaw in the passwd_check() function in "libmisc/pwdcheck.c" which is used by chfn and chsh.
Impact
=====
A local attacker may be able to use chfn and chsh to change the standard shell of other users or modify their GECOS information (full name, phone number...).
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
=========
[ 1 ] shadow NEWS file
http://ftp.pld.org.pl/software/shadow/NEWS
Availability
===========
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200411-09.xml
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 http://bugs.gentoo.org.
License
======
Copyright 2004 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.
http://creativecommons.org/licenses/by-sa/1.0
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200411-09
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Low
Title: shadow: Unauthorized modification of account information
Date: November 04, 2004
Bugs: #69212
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
-------------------------------------------------------------------
1 sys-apps/shadow < 4.0.5-r1 >= 4.0.5-r1
Description
==========
Martin Schulze reported a flaw in the passwd_check() function in "libmisc/pwdcheck.c" which is used by chfn and chsh.
Impact
=====
A local attacker may be able to use chfn and chsh to change the standard shell of other users or modify their GECOS information (full name, phone number...).
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
=========
[ 1 ] shadow NEWS file
http://ftp.pld.org.pl/software/shadow/NEWS
Availability
===========
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200411-09.xml
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 http://bugs.gentoo.org.
License
======
Copyright 2004 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.
http://creativecommons.org/licenses/by-sa/1.0
