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VULNERABILITIES

CVE-2020-12397 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=1617370 CVEIssue TrackingPatchVendor Advisory
https://security.gentoo.org/glsa/202005-03 CVEThird Party Advisory
https://usn.ubuntu.com/4373-1/ CVEThird Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-18/ CVEVendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1617370 [email protected]Issue TrackingPatchVendor Advisory

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-346Origin Validation Error[email protected]

Affected Products

ProductVersions
mozilla thunderbird
< 68.8.0

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
canonical ubuntu linux
16.04
18.04
19.10
20.04

CPE

  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2020-12397
NVD Published Date:
May 22, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2020-12397 Details - Not Deferred