SB2016091601 - Information disclosure when handling IKEv1 packets in Cisco products

Description

This security bulletin contains information about 1 security vulnerability.

1) Information disclosure (CVE-ID: CVE-2016-6415)

The vulnerability allows a remote user to access potentially sensitive information on the target system.

The weakness exists due to insufficient checks of IKE packats when handling ISAKMP requests. By sending specially crafted IKEv1 packets  to the IKE service via IPv4 or IPv6 a malicious user can obtain memory contents.

Successful exploitation of the vulnerability leads to confidential information disclosure on the vulnerable system.

Note: this vulnerability was being actively exploited in the wild. It was disclosed as part of Equation Group Leak and is reffered as BENIGNCERTAIN exploit.

Remediation

Install update from vendor's website.

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1