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Cisco Bug: CSCus80685 - AP sends few frames with previous security association's packet number

Last Modified

Nov 19, 2018

Products (1)

  • Cisco Aironet 3700 Series Access Points

Known Affected Releases

7.0(240.0) 8.0(100.0)

Description (partial) 

Symptom:
Access Point may send some frames with previous security association's packet number (PN), just after 4 way handshake.
Then, a client may update PN with an unexpected value and discards subsequent valid frames, due to CCMP replay error.

Conditions:
Reauthentication (key refresh)

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