Debian: DSA-4423-1 Moderate: PuTTY DoS and Code Execution Issues

Multiple vulnerabilities were found in the PuTTY SSH client, which could
result in denial of service and potentially the execution of arbitrary
code. In addition, in some situations random numbers could potentially be
re-used.

For the stable distribution (stretch), these problems have been fixed in
version 0.67-3+deb9u1.

We recommend that you upgrade your putty packages.

For the detailed security status of putty please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/putty

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/