Vulnerability in Sciruby Nmatrix
CVE-2021-36773
uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted web sites to cause a denial of service (unbounded recursion that can trigger memory consumption and a loss of all blocking functionality).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
References
- news.ycombinator.com/item (Third Party Advisory, Issue Tracking)
- github.com/vtriolet/writings/blob/main/posts/2021/ublock_origin_and_umatrix_den… (Exploit, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/06/msg00024.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-36773?
- CVE-2021-36773 is a high-severity vulnerability in Sciruby Nmatrix, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2021-07-18.
- How severe is CVE-2021-36773?
- High severity. CVSS v3 base score is 7.5 out of 10.