CVEvulnerability
CVE-2020-15656
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-08-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-843
Description
JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
Affected configurations
• mozilla firefox (< 79.0)
• mozilla firefox esr (< 78.1)
• mozilla thunderbird (< 78.1)
• opensuse leap 15.2
• canonical ubuntu linux 16.04
• canonical ubuntu linux 18.04
• canonical ubuntu linux 20.04
Related
Weakness · CWE (1)
- CWE-843 Access of Resource Using Incompatible Type weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1647293 Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/4443-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/ Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1647293 Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/4443-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/ Vendor Advisory