CVEvulnerability
CVE-2021-23973
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-02-26
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-209
Description
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.
Affected configurations
• mozilla firefox (< 86.0)
• mozilla firefox esr (< 78.8)
• mozilla thunderbird (< 78.8)
• debian debian linux 9.0
• debian debian linux 10.0
Related
Weakness · CWE (1)
- CWE-209 Generation of Error Message Containing Sensitive Information weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1690976 Issue Tracking, Permissions Required, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202104-09 Third Party Advisory
- https://security.gentoo.org/glsa/202104-10 Third Party Advisory
- https://www.debian.org/security/2021/dsa-4866 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-07/ Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-08/ Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-09/ Release Notes, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1690976 Issue Tracking, Permissions Required, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202104-09 Third Party Advisory
- https://security.gentoo.org/glsa/202104-10 Third Party Advisory
- https://www.debian.org/security/2021/dsa-4866 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-07/ Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-08/ Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-09/ Release Notes, Vendor Advisory