Debian Update: DSA-4523-1 Critical Thunderbirds Issues Resolved

Multiple security issues have been found in Thunderbird which could
potentially result in the execution of arbitrary code, cross-site
scripting, information disclosure and a covert content attack on S/MIME
encryption using a crafted multipart/alternative message.

For the oldstable distribution (stretch), these problems have been fixed
in version 1:60.9.0-1~deb9u1.

For the stable distribution (buster), these problems have been fixed in
version 1:60.9.0-1~deb10u1.

We recommend that you upgrade your thunderbird packages.

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

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/