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@@ -44,6 +44,17 @@ be removed from a 6.4.0 or newer release.)
fetchmail 6.3.8 (not yet released):
+# SECURITY STRENGTHENING:
+* Make the APOP challenge parser more distrustful and have it reject challenges
+ that do not conform to RFC-822 msg-id format, in the hope to make mounting
+ man-in-the-middle attacks (MITM) against APOP a bit more difficult.
+
+ APOP is claimed insecure by Gaëtan Leurent for MITM scenarios for typical
+ setups: based on MD5 collisions, it is purportedly possible to recover the
+ first three characters of the shared secret (password), which would then make
+ recovery of the shared secret a matter of hours or minutes; this would then
+ enable the attacker to impersonate the client vis-à-vis the server.
+
# BUG FIXES:
* Fix pluralization of oversized-message warning mails.
* Fix manual page: --sslcheck -> --sslcertck, and do not set trailing