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Cisco Bug: CSCut06664 - LDAP server upgrade breaks ESA to LDAPS communication

Last Modified

Mar 20, 2017

Products (1)

  • Cisco Email Security Appliance

Known Affected Releases

7.6.3-019 8.0.1-023 8.5.6-092 9.0.0-500

Description (partial)

Symptom:
Domino LDAP servers patched for POODLE Vulnerability disabled SSLv2 and SSLv3.

ESA starts LDAPS communication with SSLv2 client hello packet.

LDAP server ignores the packet and we cannot negotiate a LDAPS communication channel.

Conditions:
ESA configured for LDAPS communication to an LDAP server
LDAP server does not allow SSLv2 client hello packets.
ESA cannot successfully negotiate a LDAPS communication channel
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