Vulnerability in Fb55 Fb55/nth-Check
CVE-2021-3803
nth-check is vulnerable to Inefficient Regular Expression Complexity
Vulnerability class: ReDoS (Regular Expression Denial of Service)
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: 0.022 (81.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: +0.000
Affected products
- Fb55 Fb55/nth-Check — versions unspecified
- Nth-Check Project
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- huntr.dev/bounties/8cf8cc06-d2cf-4b4e-b42c-99fafb0b04d0 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- github.com/fb55/nth-check/commit/9894c1d2010870c351f66c6f6efcf656e26bb726 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/05/msg00023.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3803?
- CVE-2021-3803 is a high-severity vulnerability in Fb55 Fb55/nth-Check, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2021-09-17.
- How severe is CVE-2021-3803?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-3803 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.