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[ GLSA 200409-32 ] getmail: Filesystem overwrite vulnerability
From: Sune Kloppenborg Jeppesen <jaervosz () gentoo org>
Date: Thu, 23 Sep 2004 23:00:05 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200409-32 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: getmail: Filesystem overwrite vulnerability Date: September 23, 2004 Bugs: #64643 ID: 200409-32 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== getmail contains a vulnerability that could potentially allow any local user to create or overwrite files in any directory on the system. This flaw can be escalated further and possibly lead to a complete system compromise. Background ========== getmail is a reliable fetchmail replacement that supports Maildir, Mboxrd and external MDA delivery. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-mail/getmail < 4.2.0 >= 4.2.0 Description =========== David Watson discovered a vulnerability in getmail when it is configured to run as root and deliver mail to the maildirs/mbox files of untrusted local users. A malicious local user can then exploit a race condition, or a similar symlink attack, and potentially cause getmail to create or overwrite files in any directory on the system. Impact ====== An untrusted local user could potentially create or overwrite files in any directory on the system. This vulnerability may also be exploited to have arbitrary commands executed as root. Workaround ========== Do not run getmail as a privileged user; or, in version 4, use an external MDA with explicitly configured user and group privileges. Resolution ========== All getmail users should upgrade to the latest version: # emerge sync # emerge -pv ">=net-mail/getmail-4.2.0" # emerge ">=net-mail/getmail-4.2.0" References ========== [ 1 ] getmail ChangeLog http://www.qcc.ca/~charlesc/software/getmail-4/CHANGELOG [ 2 ] getmail Mailing List http://article.gmane.org/gmane.mail.getmail.user/1430 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200409-32.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
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- [ GLSA 200409-32 ] getmail: Filesystem overwrite vulnerability Sune Kloppenborg Jeppesen (Sep 24)