CVE-2021-43528
First published: Tue Dec 07 2021(Updated: )
Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | <91.4 | 91.4 |
| Thunderbird | <91.4.0 | |
| Debian | =9.0 | |
| Debian | =10.0 | |
| Debian | =11.0 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1742579
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-54/
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
- https://security.gentoo.org/glsa/202208-14
- https://www.debian.org/security/2022/dsa-5034
- https://www.mozilla.org/security/advisories/mfsa2021-54/
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-54/#CVE-2021-43528
- https://security-tracker.debian.org/tracker/CVE-2021-43528
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2021-43528?
CVE-2021-43528 is classified as a moderate severity vulnerability.
How do I fix CVE-2021-43528?
To fix CVE-2021-43528, upgrade Thunderbird to version 91.4 or later.
What versions of Thunderbird are affected by CVE-2021-43528?
CVE-2021-43528 affects all versions of Thunderbird prior to 91.4.
Does CVE-2021-43528 allow for remote code execution?
No, CVE-2021-43528 does not allow for remote code execution, but it enables JavaScript in a limited context.
Is there any workaround for CVE-2021-43528?
There are no known effective workarounds for CVE-2021-43528, so upgrading is recommended.
- collector/security-tracker-debian
- agent/type
- agent/first-publish-date
- agent/references
- agent/weakness
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- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/author
- agent/event
- agent/trending
- agent/source
- agent/softwarecombine
- agent/tags
- collector/mozilla-advisory
- vendor/mozilla
- vendor/thunderbird
- agent/software-canonical-lookup-request
- source/Mozilla
- agent/software-canonical-lookup
- collector/nvd-api
- source/NVD
- collector/nvd-index
- package-manager/debian
- canonical/thunderbird
- vendor/debian
- canonical/debian
- version/debian/9.0
- version/debian/10.0
- version/debian/11.0