CVE-2021-3803: debian debian_linux
CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2021-3803USN-6114-1DEBIAN-CVE-2021-3803DLA-3428-1GHSA-rp65-9cf3-cjxrCGA-728x-2gx9-p779CGA-75rj-m82j-f3mjCGA-8qc2-f643-5324CGA-cc4w-3g82-5537CGA-gq45-fmr6-3p34CGA-hq49-hgr5-3485CGA-mm67-vprr-6q63CGA-pg4p-q4g2-j8p3CGA-q348-7jrp-hj7xCGA-qffw-hjvj-xr2cCGA-qxxp-675f-3rprCGA-rfh3-vpjv-h6cf
Published 17-09-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-3803 is a high (CVSS 7.5) vulnerability in debian debian_linux. EPSS estimates a 2.21% chance of exploitation in the next 30 days, higher than 82.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.0 (CVE.org)EPSS score
2.21%
0%100%
Low · +0.04 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 17-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
nth-check is vulnerable to Inefficient Regular Expression Complexity
CVSS metrics
9 scores · 6 sources · 3 versionsHigh 7.5Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 5 agree
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · NpmEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
High 7.5Preferred score · CVE.org (CNA)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.21%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
+0.04 pp
From 2.17% on 19-09-2026
19-09-202619-10-2026
EPSS score2.21%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (huntr.dev)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Chainguard6 products
- arangodb-3.11< 3.11.14.5-r2
- arangodb-3.12< 3.12.9.4-r15
- py3.10-captum< 0.9.0-r1
- py3.11-captum< 0.9.0-r1
- py3.12-captum< 0.9.0-r1
Debian2 products
- node-nth-check< 2.0.1-1 | < 1.0.1-1+deb10u1
- debian_linuxEOL10.0
Fb551 product
- fb55/nth-check≥ unspecified, < 2.0.1
Npm1 product
- nth-check< 2.0.1
Nth-check_project1 product
- nth-check< 2.0.1
Ubuntu1 product
- node-nth-check< 1.0.1-1+deb10u1build0.18.04.1 | < 1.0.1-1+deb10u1build0.20.04.1
6 vendors · 12 products
References
11 links- huntr.dev/bounties/8cf8cc06-d2cf-4b4e-b42c-99fafb0b04d0WEBFIXExploitIssue TrackingPatchThird Party Advisory
- github.com/fb55/nth-check/commit/9894c1d2010870c351f66c6f6efcf656e26bb726REPORTWEBFIXPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2023/05/msg00023.htmlMailing ListWEBAdvisoryThird Party Advisory
Show all 11 references
- github.com/fb55/nth-checkPACKAGE