CVE-2021-43539: Use After Free
First published: Tue Dec 07 2021(Updated: )
Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Thunderbird | <91.4 | 91.4 |
| <95 | 95 | |
| <91.4 | 91.4 | |
| <91.4 | 91.4 | |
| Mozilla Firefox | <95.0 | |
| Mozilla Firefox ESR | <91.4.0 | |
| Mozilla Thunderbird | <91.4.0 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| 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-1 115.4.0esr-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 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1739683
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-54/
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-52/
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-53/
- https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
- https://security.gentoo.org/glsa/202202-03
- https://security.gentoo.org/glsa/202208-14
- https://www.debian.org/security/2021/dsa-5026
- https://www.debian.org/security/2022/dsa-5034
- https://www.mozilla.org/security/advisories/mfsa2021-52/
- https://www.mozilla.org/security/advisories/mfsa2021-53/
- https://www.mozilla.org/security/advisories/mfsa2021-54/
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-52/#CVE-2021-43539
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-53/#CVE-2021-43539
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-54/#CVE-2021-43539
- https://security-tracker.debian.org/tracker/CVE-2021-43539
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- collector/mozilla-advisory
- collector/security-tracker-debian
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- agent/softwarecombine
- source/Mozilla
- agent/software-canonical-lookup
- agent/severity
- agent/author
- agent/references
- agent/event
- agent/description
- agent/software-canonical-lookup-request
- agent/weakness
- agent/tags
- collector/nvd-index
- collector/mitre-cve
- source/MITRE
- vendor/mozilla
- canonical/mozilla thunderbird
- package-manager/debian
- canonical/mozilla firefox esr
- canonical/mozilla firefox
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- version/debian debian linux/11.0