Use After Free in F5 Njs
CVE-2022-43286
Nginx NJS v0.7.2 was discovered to contain a heap-use-after-free bug caused by illegal memory copy in the function njs_json_parse_iterator_call at njs_json.c.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (60.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- F5 Njs — versions 0.7.2
Weakness classification (CWE)
References
- github.com/nginx/njs/issues/480 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- github.com/nginx/njs/commit/2ad0ea24a58d570634e09c2e58c3b314505eaa6a (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-43286?
- CVE-2022-43286 is a critical-severity vulnerability in F5 Njs, classified under Use After Free. CVSS score: 9.8/10. Published 2022-10-28.
- How severe is CVE-2022-43286?
- Critical severity. CVSS v3 base score is 9.8 out of 10.