drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Überschreiben von Dateien in getmail
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Überschreiben von Dateien in getmail
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ID: |
200409-32 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Fr, 24. September 2004, 13:00 |
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Referenzen: |
http://article.gmane.org/gmane.mail.getmail.user/1430
http://www.qcc.ca/~charlesc/software/getmail-4/CHANGELOG |
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Applikationen: |
getmail |
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Originalnachricht |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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
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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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