CVE-2022-31747

moderate-risk
Published 2022-12-22

Mozilla developers Andrew McCreight, Nicolas B. Pierron, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 100 and Firefox ESR 91.9. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

Do I need to act?

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0.66% 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/buglist.cgi?bug_id=1760765%2C1765610%2C1766283%2C17...
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-20/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-21/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-22/
Issue Tracking https://bugzilla.mozilla.org/buglist.cgi?bug_id=1760765%2C1765610%2C1766283%2C17...
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-20/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-21/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-22/
43
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 2/34 · Minimal
Exposure 9/34 · Low