Symptoms

A TLS session ticket might be used for session resumption if the SNI does not match the original session ticket.

Impact

Session resumption might occur when the current session ticket extension SNI does not match session ticket SNI.

Conditions

-- TLS 1.2 or 1.3. -- Session ticket resumption. -- SNI does not match the original session ticket.

Workaround

None.

Fix Information

Session resumption with session ticket is now resumed only when the SNI matches the original session ticket.

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips