CVE-2020-12387

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 1.4%

exploitation probability

1.4%top 29% of all CVEs

observed exploitation

nono source reports it

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

Affected products

Mozilla · Firefox Mozilla · Firefox ESR Mozilla · Thunderbird

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1545345 https://security.gentoo.org/glsa/202005-03 https://security.gentoo.org/glsa/202005-04 https://usn.ubuntu.com/4373-1/https://www.mozilla.org/security/advisories/mfsa2020-16/https://www.mozilla.org/security/advisories/mfsa2020-17/https://www.mozilla.org/security/advisories/mfsa2020-18/