CVE-2020-12397

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
mozillaCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 41%
VendorProductVersion
mozillathunderbird
𝑥
< 68.8.0
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
19.10
canonicalubuntu_linux
20.04
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
thunderbird
bullseye
1:115.12.0-1~deb11u1
fixed
bullseye (security)
1:128.4.0esr-1~deb11u1
fixed
bookworm
1:115.12.0-1~deb12u1
fixed
bookworm (security)
1:115.16.0esr-1~deb12u1
fixed
sid
1:128.4.0esr-1
fixed
trixie
1:128.4.0esr-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
thunderbird
focal
Fixed 1:68.8.0+build2-0ubuntu0.20.04.2
released
eoan
Fixed 1:68.8.0+build2-0ubuntu0.19.10.2
released
bionic
Fixed 1:68.8.0+build2-0ubuntu0.18.04.2
released
xenial
Fixed 1:68.8.0+build2-0ubuntu0.16.04.2
released
trusty
dne
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1617370
https://security.gentoo.org/glsa/202005-03
https://usn.ubuntu.com/4373-1/
https://www.mozilla.org/security/advisories/mfsa2020-18/
https://bugzilla.mozilla.org/show_bug.cgi?id=1617370
https://security.gentoo.org/glsa/202005-03
https://usn.ubuntu.com/4373-1/
https://www.mozilla.org/security/advisories/mfsa2020-18/