Two issues have been found in yaws, a high performance HTTP 1.1 webserver written in Erlang.

• CVE-2020-24379

  Reject external resource requests in DAV in order to avoid XML External Entity (XXE) attackes.

• CVE-2020-24916

  Sanitize CGI executable in order to avoid command injection via CGI requests.

  For Debian 9 stretch, these problems have been fixed in version 2.0.4+dfsg-1+deb9u1.

  We recommend that you upgrade your yaws packages.

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

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