CVE-2020-12398
First published: Tue Jun 02 2020(Updated: )
If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Thunderbird | <68.9.0 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| Canonical Ubuntu Linux | =20.04 | |
| Mozilla Thunderbird | <68.9 | 68.9 |
| debian/thunderbird | 1:115.12.0-1~deb11u1 1:128.5.0esr-1~deb11u1 1:115.16.0esr-1~deb12u1 1:128.5.0esr-1~deb12u1 1:128.5.2esr-1 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1613623
- https://usn.ubuntu.com/4421-1/
- https://www.mozilla.org/security/advisories/mfsa2020-22/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/
- https://launchpad.net/bugs/cve/CVE-2020-12398
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/#CVE-2020-12410
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/#CVE-2020-12398
- https://security-tracker.debian.org/tracker/CVE-2020-12398
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12398
- https://nvd.nist.gov/vuln/detail/CVE-2020-12398
- https://ubuntu.com/security/CVE-2020-12398
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2020-12398?
CVE-2020-12398 is a vulnerability in Thunderbird where, if it is configured to use STARTTLS for an IMAP server and the server sends a PREAUTH response, Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection.
What is the severity of CVE-2020-12398?
CVE-2020-12398 has a severity rating of high.
How does CVE-2020-12398 affect Thunderbird?
CVE-2020-12398 affects Thunderbird version 68.9, where if configured to use STARTTLS for an IMAP server and the server sends a PREAUTH response, Thunderbird will continue with an unencrypted connection.
How can I fix CVE-2020-12398 in Thunderbird?
To fix CVE-2020-12398 in Thunderbird, you should update to a version that includes the necessary security patches. The recommended version is 68.9 or later. Please refer to the Mozilla Thunderbird website or vendor for the latest updates.
Where can I find more information about CVE-2020-12398?
You can find more information about CVE-2020-12398 on the Mozilla Bugzilla page (https://bugzilla.mozilla.org/show_bug.cgi?id=1613623) and the Mozilla Security Advisories page (https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/).
- collector/nvd-index
- collector/mozilla-advisory
- vendor/mozilla
- vendor/thunderbird
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- source/Launchpad
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- collector/nvd-cve
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- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/trending
- canonical/mozilla thunderbird
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- version/canonical ubuntu linux/19.10
- version/canonical ubuntu linux/20.04
- package-manager/debian