Operation on a Resource after Expiration or Release Affecting firefox-esr package, versions <78.10.0esr-1
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-FIREFOXESR-1251757
- published 20 Apr 2021
- disclosed 24 Jun 2021
Introduced: 20 Apr 2021
CVE-2021-23995 Open this link in a new tabHow to fix?
Upgrade Debian:unstable
firefox-esr
to version 78.10.0esr-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox-esr
package and not the firefox-esr
package as distributed by Debian
.
See How to fix?
for Debian:unstable
relevant fixed versions and status.
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.