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This bulletin was written by Vigil@nce : https://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

An attacker can read a memory fragment via IKE packets sent to a
router Cisco IOS, IOS XR or IOS XE, in order to obtain sensitive
information.

– Impacted products: Cisco Catalyst, IOS by Cisco, IOS XE Cisco, IOS
XR Cisco, Cisco Router.
– Severity: 1/4.
– Creation date: 19/09/2016.

DESCRIPTION OF THE VULNERABILITY

The Cisco IOS, IOS XR and IOS XE products offer an IKE service,
the signaling protocol for IPsec.

However, when a IKE version 1 packet is handled, the router may
return the content of an uninitialized memory area in a response
packet.

An attacker can therefore read a memory fragment via IKE packets
sent to a router Cisco IOS, IOS XR or IOS XE, in order to obtain
sensitive information.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Cisco-IOS-IOS-XR-IOS-XE-information-disclosure-via-IKE-20641