CVE-2020-12405

When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.

Affected

Mozilla · Thunderbird · Firefox · Firefox ESR

CVSS v3.1 NVD

5.3 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v2.0 NVD

2.6 LOWAV:N/AC:H/Au:N/C:N/I:N/A:P

EPSS

1.35% chance of exploitation in the next 30 days, 71st percentile

Published

2020-07-09

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://bugzilla.mozilla.org/show_bug.cgi?id=1631618

Security advisories

• https://www.mozilla.org/security/advisories/mfsa2020-20
• https://www.mozilla.org/security/advisories/mfsa2020-21
• https://www.mozilla.org/security/advisories/mfsa2020-22
• https://usn.ubuntu.com/4421-1

References

• CVE Record
• NVD entry