Information disclosure in Mozilla Firefox
CVE-2022-29916
Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions unspecified
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2022-16/ (Exploit, Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2022-18/ (Exploit, Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2022-17/ (Exploit, Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-29916?
- CVE-2022-29916 is a medium-severity vulnerability in Mozilla Firefox, classified under Information Disclosure. CVSS score: 6.5/10. Published 2022-12-22.
- How severe is CVE-2022-29916?
- Medium severity. CVSS v3 base score is 6.5 out of 10.