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Date: Tue, 12 Dec 2017 16:18:34 +0100
From: Hanno Böck <>
Subject: ROBOT attack (WolfSSL, Bouncy Castle, Erlang)


I published details about the ROBOT attack today, it's a couple of
minor variations of the old Bleichenbacher attack.
(Return Of Bleichenbacher's Oracle Threat)

It is mostly about proprietary appliances, but also affects three FOSS
TLS stacks.

The attack is based on the fact that an attacker can distinguish valid
and invalid RSA PKCS #1 v1.5 paddings based on different server

Erlang (CVE-2017-1000385):

WolfSSL (CVE-2017-13099):
(only a pull req for now, no new release yet)

Bouncy Castle (CVE-2017-13098):
1.59 beta 9 contains the fix:

Hanno Böck

GPG: FE73757FA60E4E21B937579FA5880072BBB51E42

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