A flaw during verification of certain S/MIME signatures causes emails to be shown in Thunderbird as having a valid digital signature, even if the shown message contents aren't covered by the signature. The flaw allows an attacker to reuse a valid S/MIME signature to craft an email message with arbitrary content. This vulnerability affects Thunderbird < 60.5.1.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Apr 26, 2019 |
| Centos_linux | — | Upgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfo | Aug 28, 2019 | Apr 26, 2019 |
| Debian | — | Upgrade thunderbird | Feb 20, 2019 | Feb 16, 2019 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox.Upgrade www-client/firefox-bin. | Apr 3, 2019 | Apr 2, 2019 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 60.5.1Upgrade to the latest version of Mozilla Thunderbird | Feb 15, 2019 | Feb 14, 2019 |
| Oracle Solaris | — | Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 60.6.1-11.4.9.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird to version 60.6.1-11.4.9.0.1.2.0 on Solaris 11.4 | May 30, 2019 | Apr 26, 2019 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsource | Jun 3, 2019 | Apr 26, 2019 |
| Suse | — | Upgrade MozillaThunderbird-buildsymbolsUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-translations-otherUpgrade MozillaThunderbird-translations-common | Feb 27, 2019 | Feb 22, 2019 |
| Ubuntu | — | Upgrade thunderbird | Mar 7, 2019 | Feb 22, 2019 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub