CVEvulnerability
CVE-2020-12406
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-07-09
- 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-345
Description
Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
Affected configurations
• mozilla firefox (< 77.0)
• mozilla firefox esr (< 68.9.0)
• mozilla thunderbird (< 68.9.0)
• canonical ubuntu linux 16.04
• canonical ubuntu linux 18.04
• canonical ubuntu linux 19.10
• canonical ubuntu linux 20.04
Related
Weakness · CWE (1)
- CWE-345 Insufficient Verification of Data Authenticity weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1639590 Issue Tracking, Vendor Advisory
- https://usn.ubuntu.com/4421-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-20/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-21/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-22/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1639590 Issue Tracking, Vendor Advisory
- https://usn.ubuntu.com/4421-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-20/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-21/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-22/ Vendor Advisory