- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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@xxxxxxxxxx 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
Attachment:
pgpCFdArNGQjD.pgp
Description: PGP signature