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AUSCERT External Security Bulletin Redistribution
IKEv1 Information Disclosure Vulnerability in Multiple Cisco Products
19 September 2016
AusCERT Security Bulletin Summary
Product: Cisco IOS
Cisco IOS XE
Cisco IOS XR
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2016-6415
Comment: There is proof of concept code publicly available.
Cisco will be releasing patches.
Administrators are advised to implement an intrusion prevention
system (IPS) or intrusion detection system (IDS) to help detect and
prevent attacks that attempt to exploit this vulnerability.
Administrators are advised to monitor affected systems.
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Cisco Security Advisory: IKEv1 Information Disclosure Vulnerability in Multiple Cisco Products
Advisory ID: cisco-sa-20160916-ikev1
For Public Release 2016 September 16 16:00 GMT
A vulnerability in IKEv1 packet processing code in Cisco IOS, Cisco IOS XE and Cisco IOS XR Software could allow an unauthenticated, remote attacker to retrieve memory contents, which could lead to the disclosure of confidential information.
The vulnerability is due to insufficient condition checks in the part of the code that handles IKEv1 security negotiation requests. An attacker could exploit this vulnerability by sending a crafted IKEv1 packet to an affected device configured to accept IKEv1 security negotiation requests. A successful exploit could allow the attacker to retrieve memory contents, which could lead to the disclosure of confidential information.
Cisco will release software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1
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