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fetchmail Configuration Information Disclosure
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SUMMARY
" <http://fetchmail.berlios.de/> Fetchmail is a full-featured, robust,
well-documented remote-mail retrieval and forwarding utility intended to
be used over on-demand TCP/IP links (such as SLIP or PPP connections). "
fetchmail does not limit the settings file's readability, this allow any
user on the machine obtain to sensitive information.
DETAILS
Vulnerable Systems:
* fetchmail version 6.2.5.2
* fetchmail version 6.2.5
* fetchmail version 6.2.0
* fetchmailconf version 1.43
* fetchmailconf version 1.43.1
Immune Systems:
* Fetchmail version 6.2.9-rc6
* fetchmailconf version 1.43.2
* fetchmailconf version 1.49
* fetchmail version 6.3.0
The fetchmailconf program opens the control file, writes the configuration
to it, and only then changes the file's security settings to 0600
(rw-------). As the file, usually contains passwords, not making it
unreadable to other users, can cause a situation where the file can be
used to expose passwords.
Workaround:
Run "umask 077", then run "fetchmailconf" from the same shell. After
fetchmailconf has finished, you can restore your old umask.
Vendor Status:
The vendor has fixed the issue:
For users of fetchmail-6.2.5.2: Download
<http://developer.berlios.de/project/showfiles.php?group_id=1824&release_id=6617>
fetchmailconf-1.43.2.gz.
For users of fetchmail-6.2.6* or 6.2.9* before 6.2.9-rc6: update to the
latest fetchmail-devel package
<https://developer.berlios.de/project/showfiles.php?group_id=1824>
6.2.9-rc6.
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3088>
CVE-2005-3088
ADDITIONAL INFORMATION
The information has been provided by
<mailto:ma+nomail@dt.e-technik.uni-dortmund.de> Matthias Andree.
The original article can be found at:
<http://fetchmail.berlios.de/fetchmail-SA-2005-02.txt>
http://fetchmail.berlios.de/fetchmail-SA-2005-02.txt
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