CVE-2019-17069

Name of the Vulnerable Software and Affected Versions PuTTY versions prior to 0.73

Description The issue is related to accessing freed memory locations, which could allow remote SSH-1 servers to cause a denial of service. This can be achieved via an SSH1 MSG DISCONNECT message. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

Recommendations For versions prior to 0.73, update to version 0.73 or later to resolve the issue. As a temporary workaround, consider restricting access to SSH-1 servers to minimize the risk of exploitation. Avoid using the SSH1 MSG DISCONNECT message in the affected API endpoint until the issue is resolved.