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image: Threatpost

Cisco Patches Critical Code Execution Flaw in Security Appliances

January 30, 2018

Cisco informed customers on Monday that updates released for its Adaptive Security Appliance (ASA) software patch a critical vulnerability that can be exploited to gain full control of devices or cause them to reload.

The security hole, tracked as CVE-2018-0101 and assigned a CVSS score of 10, allows a remote and unauthenticated attacker to execute arbitrary code or cause a denial-of-service (DoS) condition.

The flaw exists in the Secure Sockets Layer (SSL) VPN functionality of the ASA software. If this “webvpn” feature is enabled on a device, an attempt to double free a memory region occurs. A remote attacker can trigger the bug by sending specially crafted XML packets to a webvpn-configured interface.

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