CVE Catalog

CVE-2017-6607

High
Published: Translated: NVD NIST

Summary

A vulnerability in the DNS code of Cisco ASA Software could allow an unauthenticated, remote attacker to cause an affected device to reload or corrupt the information present in the device's local DNS cache. The vulnerability is due to a flaw in handling crafted DNS response messages.

Risk Assessment

Exploitation of this vulnerability could lead to device reloads, resulting in a denial of service (DoS) condition or corruption of local DNS cache information. An attacker could exploit this vulnerability by sending a crafted response to a DNS request.

Recommendation

It is recommended to update Cisco ASA software to the latest version to mitigate this vulnerability. Additionally, monitor network traffic directed to the device for potential attack attempts.

Related vulnerabilities

Original NVD description (English source)

A vulnerability in the DNS code of Cisco ASA Software could allow an unauthenticated, remote attacker to cause an affected device to reload or corrupt the information present in the device's local DNS cache. The vulnerability is due to a flaw in handling crafted DNS response messages. An attacker could exploit this vulnerability by triggering a DNS request from the Cisco ASA Software and replying with a crafted response. A successful exploit could cause the device to reload, resulting in a denial of service (DoS) condition or corruption of the local DNS cache information. Note: Only traffic directed to the affected device can be used to exploit this vulnerability. This vulnerability affects Cisco ASA Software configured in routed or transparent firewall mode and single or multiple context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic. This vulnerability affects Cisco ASA Software running on the following products: Cisco ASA 1000V Cloud Firewall, Cisco ASA 5500 Seri

Vulnerability data from NVD (NIST) · CISA KEV · EPSS