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-rw-r--r--fetchmail.man10
1 files changed, 10 insertions, 0 deletions
diff --git a/fetchmail.man b/fetchmail.man
index e953a5dd..974f5eac 100644
--- a/fetchmail.man
+++ b/fetchmail.man
@@ -2781,6 +2781,16 @@ then that name is used as the default local name. Otherwise
session ID (this elaborate logic is designed to handle the case of
multiple names per userid gracefully).
+.IP \fBFETCHMAIL_DISABLE_CBC_IV_COUNTERMEASURE\fP
+(since v6.3.22):
+If this environment variable is set and not empty, fetchmail will disable
+a countermeasure against an SSL CBC IV attack (by setting
+SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS). This is a security risk, but may be
+necessary for connecting to certain non-standards-conforming servers.
+See fetchmail's NEWS file and fetchmail-SA-2012-01.txt for details.
+Earlier fetchmail versions (v6.3.21 and older) used to disable this
+countermeasure, but v6.3.22 no longer does that as a safety precaution.
+
.IP \fBFETCHMAIL_INCLUDE_DEFAULT_X509_CA_CERTS\fP
(since v6.3.17):
If this environment variable is set and not empty, fetchmail will always load