CVE-2022-1529

moderate-risk
Published 2022-12-22

An attacker could have sent a message to the parent process where the contents were used to double-index into a JavaScript object, leading to prototype pollution and ultimately attacker-controlled JavaScript executing in the privileged parent process. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.

Do I need to act?

~
4.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Mozilla

References (4)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1770048
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-19/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1770048
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-19/
47
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 8/34 · Low
Exposure 9/34 · Low