JH/40 Bug 2999: Fix a possible OOB write in the external authenticator, which
could be triggered by externally-supplied input. Found by Trend Micro.
+JH/41 Bug 3000: Fix a possible OOB write in the SPA authenticator, which could
+ be triggered by externally-controlled input. Found by Trend Micro.
+
Exim version 4.96
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