Clavister Information for VU#888801

SSL/TLS implementations disclose side channel information via PKCS #1 v1.5 version number extension


Not Affected

Vendor Statement

Clavister Firewall: Not Vulnerable
Clavister VPN Client: Not Vulnerable

The IKE protocol is not vulnerable to the Klima-Pokorny-Rosa attack, as it does not provide the necessary "clues" for the Bad Version Oracle to work with.

Even IKE with RSA encryption, which is an unusual IKE mode of operation that Clavister products does not do, should be immune to this attack.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References



The CERT/CC has no additional comments at this time.

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