Cisco Cisco Email Security Appliance C680

The following list describes known issues in this release of AsyncOS for Email.

67137

Previously, if you had a chained masquerade LDAP query configured and the second 
LDAP server was unreachable, the message was stuck in the queue in a partially 
masqueraded state. When the second LDAP server started to respond again, the 
appliance bounced any partially masqueraded messages stuck in the queue. This issue 
has been resolved.

55972

Previously, an industry-wide vulnerability that existed in the TLS protocol potentially 
impacted any Cisco product using any version of TLS /SSL. The vulnerability existed 
in how the protocol handles session re-negotiation and exposed users to a potential 
Man-in-the-middle attack. This issue has been fixed.

70522

55358

Fixed an issue where DKIM signing and verification created large amounts of 
unclaimed data in the appliance’s RAM, which could have resulted in the appliance 
running out of memory.

69429

Previously, AsyncOS stopped attempting to update the Context Adaptive Scanning 
Engine (CASE) after hitting an update timeout. No more CASE updates would arrive, 
even after trying to force an update via the CLI. This issue has been resolved. 
AsyncOS will continue to do further updates to CASE after a timeout.