Clarify attack conditions in the ChangeLog.
Referring to the previous entry could imply that the current one was limited
to too, which it isn't.
@@ -19,10 +19,13 @@ Security
* Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
1.2, that allowed a local attacker, able to execute code on the local
machine as well as manipulate network packets, to partially recover the
- plaintext of messages under some conditions (see previous entry) by using
- a cache attack targetting an internal MD/SHA buffer. Connections using
- GCM or CCM instead of CBC or using Encrypt-then-Mac (RFC 7366) were not
- affected. Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
+ plaintext of messages under some conditions by using a cache attack
+ targetting an internal MD/SHA buffer. With TLS or if
+ mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
+ the same secret (for example a HTTP Cookie) has been repeatedly sent over
+ connections manipulated by the attacker. Connections using GCM or CCM
+ instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
+ Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
* Add a counter-measure against a vulnerability in TLS ciphersuites based
on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
execute code on the local machine as well as manipulate network packets,
