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Cisco Bug: CSCum54163 - IKEv2 leaks embryonic SAs during child SA negotiation with PFS mismatch

Last Modified

Apr 16, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases


Description (partial)

IKEv2 leaks embryonic SAs which are visible via 'show crypto ipsec sa'.

In site-to-site VPN scenarios where a peer is allowed to connect via a static crypto map or dynamic map configuration but the entry is mis-configured to not have PFS but the initiator negotiates the tunnel with PFS.  This is specific to a child SA negotiation which is possible on a rekey of an existing IPsec SA or the negotiation of additional IPsec SA.
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