Information Exposure Affecting firefox-esr package, versions <78.8.0esr-1
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Confidentiality
High
Threat Intelligence
EPSS
0.88% (83rd
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN12-FIREFOXESR-1546252
- published 24 Feb 2021
- disclosed 26 Feb 2021
Introduced: 24 Feb 2021
CVE-2021-23973 Open this link in a new tabHow to fix?
Upgrade Debian:12
firefox-esr
to version 78.8.0esr-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:12
relevant fixed versions and status.
When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
References
- https://security-tracker.debian.org/tracker/CVE-2021-23973
- https://www.debian.org/security/2021/dsa-4866
- https://security.gentoo.org/glsa/202104-09
- https://security.gentoo.org/glsa/202104-10
- https://bugzilla.mozilla.org/show_bug.cgi?id=1690976
- https://www.mozilla.org/security/advisories/mfsa2021-07/
- https://www.mozilla.org/security/advisories/mfsa2021-08/
- https://www.mozilla.org/security/advisories/mfsa2021-09/
- https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html