CVE-2020-6821
First published: Tue Apr 07 2020(Updated: )
Last updated 24 July 2024
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Thunderbird | <68.7 | 68.7 |
| Mozilla Firefox ESR | <68.7 | 68.7 |
| Mozilla Firefox | <75 | 75 |
| Mozilla Firefox | <75.0 | |
| Mozilla Firefox ESR | <68.7.0 | |
| Mozilla Thunderbird | <68.7.0 | |
| debian/firefox | 133.0.3-1 | |
| debian/firefox-esr | 115.14.0esr-1~deb11u1 128.5.0esr-1~deb11u1 128.3.1esr-1~deb12u1 128.5.0esr-1~deb12u1 128.5.0esr-1 128.5.1esr-1 | |
| 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=1625404
- https://www.mozilla.org/security/advisories/mfsa2020-12/
- https://www.mozilla.org/security/advisories/mfsa2020-13/
- https://www.mozilla.org/security/advisories/mfsa2020-14/
- https://usn.ubuntu.com/4335-1/
- https://launchpad.net/bugs/cve/CVE-2020-6821
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-14/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-13/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6826
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-14/#CVE-2020-6821
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-13/#CVE-2020-6821
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6821
- https://security-tracker.debian.org/tracker/CVE-2020-6821
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6821
- https://nvd.nist.gov/vuln/detail/CVE-2020-6821
- https://ubuntu.com/security/CVE-2020-6821
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2020-6821?
CVE-2020-6821 is a vulnerability in Mozilla Firefox and Thunderbird that allows potential sensitive data disclosure when reading from areas outside the source resource with WebGL's copyTexSubImage method.
Which software is affected by CVE-2020-6821?
Mozilla Firefox (up to version 75.0), Mozilla Firefox ESR (up to version 68.7.0), and Mozilla Thunderbird (up to version 68.7.0) are affected by CVE-2020-6821.
How severe is CVE-2020-6821?
CVE-2020-6821 has a severity rating of high.
How can I fix CVE-2020-6821?
Update your Mozilla Firefox or Thunderbird to the latest version available to mitigate CVE-2020-6821.
Where can I find more information about CVE-2020-6821?
You can find more information about CVE-2020-6821 on Mozilla's security advisories and the MITRE CVE database.
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