CVE-2022-45406

moderate-risk
Published 2022-12-22

If an out-of-memory condition occurred when creating a JavaScript global, a JavaScript realm may be deleted while references to it lived on in a BaseShape. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

Do I need to act?

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0.42% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Mozilla

References (8)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1791975
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-47/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-48/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-49/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1791975
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-47/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-48/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-49/
43
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 2/34 · Minimal
Exposure 9/34 · Low