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Category:   Device (Router/Bridge/Hub)  >   Cisco IOS Vendors:   Cisco
Cisco IOS/IOS XE IKEv1 Flaw Lets Remote Users Obtain Remote RSA-Encrypted IKEv1 Nonces on the Target System
SecurityTracker Alert ID:  1041539
SecurityTracker URL:
CVE Reference:   CVE-2018-0131   (Links to External Site)
Date:  Aug 21 2018
Impact:   Disclosure of authentication information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Cisco IOS/IOS XE. A remote user can obtain encrypted IKEv1 nonces on the target system.

A remote user can send specially crafted Internet Key Exchange Version 1 (IKEv1) requests to obtain RSA-encrypted nonces.

Systems configured with the authentication rsa-encr option are affected.

The vendor has assigned bug ID CSCve77140 to this vulnerability.

Dennis Felsch, Martin Grothe, and Jorg Schwenk from Ruhr-Universitat Bochum and Adam Czubak and Marcin Szymanek from University of Opole reported this vulnerability.

Impact:   A remote user can obtain RSA-encrypted IKEv1 nonces on the target system.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error

Message History:   None.

 Source Message Contents



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