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authorJeremy Harris <jgh146exb@wizmail.org>2018-03-14 12:43:58 +0000
committerJeremy Harris <jgh146exb@wizmail.org>2018-03-16 10:23:26 +0000
commitecce6d9ac4fa63cc7e011c21a033f5b6c54a3995 (patch)
tree48365ec756e3a013beeaf95500d701e99fa9b1cf /doc
parentc45e9ca19b439828bb71fc55b4054b0bd9229676 (diff)
Fix heavy-pipeline SMTP command input corruption. Bug 2250
Diffstat (limited to 'doc')
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1 files changed, 11 insertions, 0 deletions
diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 6fb440203..eb0e1a346 100644
--- a/doc/doc-txt/ChangeLog
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@@ -149,6 +149,17 @@ JH/28 Ensure that variables possibly set during message acceptance are marked
message files. Do the same for the SMTP per-message loop, for certain
variables indirectly set in ACL operations.
+JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
+ as a multi-recipient message from a mailinglist manager). The coding had
+ an arbitrary cutoff number of characters while checking for more input;
+ enforced by writing a NUL into the buffer. This corrupted long / fast
+ input. The problem was exposed more widely when more pipelineing of SMTP
+ responses was introduced, and one Exim system was feeding another.
+ The symptom is log complaints of SMTP syntax error (NUL chars) on the
+ receiving system, and refused recipients seen by the sending system
+ (propating to people being dropped from mailing lists).
+ Discovered and pinpointed by David Carter.
+
Exim version 4.90
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