CVE-2020-12397

MEDIUM

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.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1617370

https://usn.ubuntu.com/4373-1/

https://www.mozilla.org/security/advisories/mfsa2020-18/

Details

Source: MITRE

Published: 2020-05-22

Updated: 2020-06-02

Type: CWE-346

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 4.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Impact Score: 1.4

Exploitability Score: 2.8

Severity: MEDIUM