CVEvulnerability
CVE-2020-12397
4.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-05-22
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-346
Description
By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird < 68.8.0.
Affected configurations
• mozilla thunderbird (< 68.8.0)
• 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-346 Origin Validation Error weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1617370 Issue Tracking, Patch, Vendor Advisory
- https://security.gentoo.org/glsa/202005-03 Third Party Advisory
- https://usn.ubuntu.com/4373-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-18/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1617370 Issue Tracking, Patch, Vendor Advisory
- https://security.gentoo.org/glsa/202005-03 Third Party Advisory
- https://usn.ubuntu.com/4373-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-18/ Vendor Advisory