Use After Free in Mozilla Firefox
CVE-2019-17013
Mozilla developers reported memory safety bugs present in Firefox 70. 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 Firefox < 71.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.010 · change: +0.001
Affected products
- Mozilla Firefox — versions before 71
Weakness classification (CWE)
References
- bugzilla.mozilla.org/buglist.cgi (Exploit, Patch, Issue Tracking, Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-36/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2019-17013?
- CVE-2019-17013 is a high-severity vulnerability in Mozilla Firefox, classified under Use After Free. CVSS score: 8.8/10. Published 2020-01-08.
- How severe is CVE-2019-17013?
- High severity. CVSS v3 base score is 8.8 out of 10.