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fetchmail-SA-2007-01: APOP considered insecure
Topics: APOP authentication insecure, fetchmail implementation lax
Author: Matthias Andree
-Version: 1.0
+Version: 1.1
Announced: 2007-04-06
Type: password theft when under MITM attack
Impact: password disclosure possible
Danger: low
Credits: Gaƫtan Leurent
CVE Name: CVE-2007-1558
-URL: http://fetchmail.berlios.de/fetchmail-SA-2007-01.txt
-Project URL: http://fetchmail.berlios.de/
+URL: http://fetchmail.sourceforge.net/fetchmail-SA-2007-01.txt
+Project URL: http://fetchmail.sourceforge.net/
Affects: fetchmail release < 6.3.8
==================
2007-04-06 1.0 first release
+2008-04-24 1.1 add --ssl to section 3. suggestion A below
1. Background
A. Only use APOP on SSL or TLS secured connections with mandatory and thorough
certificate validation, such as fetchmail --sslproto tls1 --sslcertck
- or --sslproto ssl3 --sslcertck), or equivalent in the run control file.
+ or --ssl --sslproto ssl3 --sslcertck), or equivalent in the run control file.
B. Avoid APOP and use stronger authenticators.
fetchmail 6.3.8 or newer, as it is less susceptible to the attack by
validating the APOP challenge more strictly to make the attack
harder. The fetchmail 6.3.8 source code is available from
- <http://developer.berlios.de/project/showfiles.php?group_id=1824>.
+ <http://sourceforge.net/projects/fetchmail/files/>.
A. Copyright, License and Warranty
==================================
-(C) Copyright 2007 by Matthias Andree, <matthias.andree@gmx.de>.
+(C) Copyright 2007, 2008 by Matthias Andree, <matthias.andree@gmx.de>.
Some rights reserved.
-This work is licensed under the Creative Commons
-Attribution-NonCommercial-NoDerivs German License. To view a copy of
-this license, visit http://creativecommons.org/licenses/by-nc-nd/2.0/de/
-or send a letter to Creative Commons; 559 Nathan Abbott Way;
-Stanford, California 94305; USA.
+This work is licensed under the
+Creative Commons Attribution-NoDerivs 3.0 Germany License (CC BY-ND 3.0).
+
+To view a copy of this license, visit
+http://creativecommons.org/licenses/by-nd/3.0/de/deed.en
+or send a letter to:
+
+Creative Commons
+444 Castro Street
+Suite 900
+MOUNTAIN VIEW, CALIFORNIA 94041
+USA
+
THIS WORK IS PROVIDED FREE OF CHARGE AND WITHOUT ANY WARRANTIES.
Use the information herein at your own risk.
END OF fetchmail-SA-2007-01.txt
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