Home/CVE/By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address t
CVE

CVE-2020-12397

By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address t

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.

MEDIUM · CVSS 4.3 EPSS 0.00195
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-346Origin Validation Error
▤

Affected Products & Versions

2
mozilla thunderbird< 68.8.0
canonical ubuntu linuxall versions
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 May 2020 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
⚑

Vendor Advisories

9
suse-csafopenSUSE-SU-2024:10601-1
usnUSN-4373-1
suse-csafopenSUSE-SU-2020:0643-1
suse-csafSUSE-SU-2020:1225-1
rhsaRHSA-2020:2048Critical
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.mozilla.org/show_bug.cgi?id=1617370Issue TrackingPatchVendor Advisory
https://security.gentoo.org/glsa/202005-03Third Party Advisory
https://usn.ubuntu.com/4373-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-18/Vendor Advisory
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