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Debian LTS Advisory DLA-2575-1                [email protected]
https://www.debian.org/lts/security/               Emilio Pozuelo Monfort
February 25, 2021                             https://wiki.debian.org/LTS
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Package        : firefox-esr
Version        : 78.8.0esr-1~deb9u1
CVE ID         : CVE-2021-23968 CVE-2021-23969 CVE-2021-23973 CVE-2021-23978

Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code or information disclosure.

For Debian 9 stretch, these problems have been fixed in version
78.8.0esr-1~deb9u1.

We recommend that you upgrade your firefox-esr packages.

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

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