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Secunia Research 14/02/2006
- NeoMail neomail-prefs.pl Missing Session ID Validation -
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Table of Contents
Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9
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1) Affected Software
* NeoMail 1.28
Other versions may also be affected.
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2) Severity
Rating: Moderately Critical
Impact: Security bypass
Where: Remote
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3) Description of Vulnerability
Secunia Research has discovered a vulnerability in NeoMail, which can
be exploited by malicious people to bypass certain security
restrictions.
The vulnerability is caused due to missing validation of the Session
ID in the "addfolder()" and "deletefolder()" functions in
neomail-prefs.pl. This can be exploited to create mail-folder files
in arbitrary directories writable by the mail group (e.g. in users'
/var/neomail/users NeoMail directories), and to delete mail-folder
files created by arbitrary users if the names of the folder files
are known.
Successful exploitation requires that NeoMail is configured with
$homedirfolders = 'no' and $homedirspools = 'no'
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4) Solution
Update to version 1.29.
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5) Time Table
10/02/2006 - Initial vendor notification.
10/02/2006 - Initial vendor reply.
14/02/2006 - Public disclosure.
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6) Credits
Discovered by Tan Chew Keong, Secunia Research.
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7) References
NeoMail:
http://sourceforge.net/project/shownotes.php?release_id=392562&group_id=2874
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8) About Secunia
Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia website:
https://www.flexera.com/
Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.
Secunia offers a FREE mailing list called Secunia Security Advisories:
https://www.flexera.com/secunia_security_advisories/
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9) Verification
Please verify this advisory by visiting the Secunia website:
https://www.flexera.com/about-us/secunia-research/advisories/sr-2006-3.html
Complete list of vulnerability reports published by Secunia Research:
https://www.flexera.com/about-us/secunia-research/advisories/
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