1. Home
  2. Vulnerabilities
  3. CVE-2021-43539

CVE-2021-43539

CVSS v3.1 8.8 (High)
88% Progress
CVSS v2.0 6.8 (Medium)
68% Progress
EPSS 0.65 % (80th)
0.65% Progress
Affected Products 4
Advisories 31
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Weaknesses
CWE-416
Use After Free
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2021-12-08 22:15:09
(2 years ago)
Updated Date
2022-12-09 15:55:49
(21 months ago)

Affected Products

Debian

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Firefox prior 95.0 version cpe:2.3:a:mozilla:firefox < 95.0
  Mozilla Firefox Esr prior 91.4.0 version cpe:2.3:a:mozilla:firefox_esr < 91.4.0
  Mozilla Thunderbird prior 91.4.0 version cpe:2.3:a:mozilla:thunderbird < 91.4.0

Configuration #2

    CPE23 From Up To
  Debian Linux 9.0 cpe:2.3:o:debian:debian_linux:9.0
  Debian Linux 10.0 cpe:2.3:o:debian:debian_linux:10.0
  Debian Linux 11.0 cpe:2.3:o:debian:debian_linux:11.0