CVE-2021-23994
First published: Mon Apr 19 2021(Updated: )
A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/firefox | 118.0.2-1 | |
| debian/firefox-esr | 91.12.0esr-1~deb10u1 115.3.1esr-1~deb10u1 102.15.0esr-1~deb11u1 115.3.1esr-1~deb11u1 102.15.1esr-1~deb12u1 115.3.0esr-1~deb12u1 115.3.0esr-1 | |
| debian/thunderbird | 1:91.12.0-1~deb10u1 1:115.3.1-1~deb10u1 1:102.13.1-1~deb11u1 1:115.3.1-1~deb11u1 1:102.15.1-1~deb12u1 1:115.3.1-1~deb12u1 1:115.3.1-1 | |
| Thunderbird | <78.10 | 78.10 |
| Firefox | <88.0 | |
| Firefox ESR | <78.10 | |
| Thunderbird | <78.10 | |
| Firefox | <88 | 88 |
| Firefox ESR | <78.10 | 78.10 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1699077
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-14/
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-15/
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/
- https://www.mozilla.org/security/advisories/mfsa2021-14/
- https://www.mozilla.org/security/advisories/mfsa2021-15/
- https://www.mozilla.org/security/advisories/mfsa2021-16/
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-14/#CVE-2021-23994
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-23994
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-23994
- https://security-tracker.debian.org/tracker/CVE-2021-23994
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2021-23994?
CVE-2021-23994 has a medium severity level due to the potential for memory corruption and out-of-bounds write issues.
How do I fix CVE-2021-23994?
To fix CVE-2021-23994, update Mozilla Thunderbird and Firefox ESR to version 78.10 or later.
What software is affected by CVE-2021-23994?
CVE-2021-23994 affects Mozilla Thunderbird versions earlier than 78.10 and Firefox ESR versions earlier than 78.10.
Can CVE-2021-23994 lead to exploitation?
Yes, CVE-2021-23994 can potentially lead to exploitation through memory corruption vulnerabilities.
Is there a specific version of Firefox that resolves CVE-2021-23994?
Yes, upgrading to Firefox version 88 or later will resolve CVE-2021-23994.
- collector/security-tracker-debian
- agent/type
- agent/first-publish-date
- agent/author
- agent/severity
- agent/references
- agent/weakness
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/trending
- agent/source
- collector/mozilla-advisory
- agent/software-canonical-lookup-request
- source/Mozilla
- agent/software-canonical-lookup
- collector/nvd-index
- agent/tags
- agent/softwarecombine
- package-manager/debian
- vendor/mozilla
- canonical/thunderbird
- canonical/firefox
- canonical/firefox esr