Cisco patches IOS in response to boffins' IKE-busting breakthrough

Cisco has pushed out an update for its internetwork operating system (IOS) and IOS XE firmware in advance of a Usenix presentation on circumventing cryptographic key protocol. The networking behemoth is advising all customers running hardware that uses IOS and IOS XE to get the updates that address CVE-2018-0131, a security …

[Mayday]

Nice find

However I can't think of a single instance in the past 20 or so years of doing this where I've seen rsa-encr (as opposed to rsa-sig) being used for IKE/ISAKMP.