CVE-2020-12397
First published: Tue May 05 2020(Updated: )
By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Thunderbird | <68.8 | 68.8 |
| debian/thunderbird | 1:115.12.0-1~deb11u1 1:115.15.0-1~deb11u1 1:115.12.0-1~deb12u1 1:115.15.0-1~deb12u1 1:128.1.1esr-1 1:128.2.0esr-1 | |
| Mozilla Thunderbird | <68.8.0 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =19.10 | |
| Ubuntu | =20.04 |
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Reference Links
- 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://www.mozilla.org/en-US/security/advisories/mfsa2020-18/
- https://launchpad.net/bugs/cve/CVE-2020-12397
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/#CVE-2020-12392
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/#CVE-2020-12397
- https://security-tracker.debian.org/tracker/CVE-2020-12397
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12397
- https://nvd.nist.gov/vuln/detail/CVE-2020-12397
- https://ubuntu.com/security/CVE-2020-12397
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2020-12397?
CVE-2020-12397 has been rated as a low severity vulnerability.
How do I fix CVE-2020-12397?
To fix CVE-2020-12397, upgrade to Mozilla Thunderbird version 68.9 or later.
What type of attack is associated with CVE-2020-12397?
CVE-2020-12397 is associated with email header spoofing using encoded Unicode whitespace characters.
Which versions of Thunderbird are affected by CVE-2020-12397?
CVE-2020-12397 affects Mozilla Thunderbird versions prior to 68.9.
Is CVE-2020-12397 specific to certain operating systems?
CVE-2020-12397 is related to Mozilla Thunderbird and can be found on multiple operating systems where the affected versions are used.
- collector/mozilla-advisory
- vendor/mozilla
- vendor/thunderbird
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- version/ubuntu/16.04
- version/ubuntu/18.04
- version/ubuntu/19.10
- version/ubuntu/20.04