CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NCVE-2021-29418
Medium (5.3) in netmask project netmask. EPSS 1.5% chance of exploitation in the next 30 days. Fixed in netmask 1.1.0, 2.0.1.
The netmask package before 2.0.1 for Node.js mishandles certain unexpected characters in an IP address string, such as an octal digit of 9. This (in some situations) allows attackers to bypass access control that is based on IP addresses. NOTE: this issue exists because of an incomplete fix for CVE-2021-28918.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- netmask_project:netmask
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4c7m-wxvm-r7gc | npm | netmask | <1.1.0 | 1.1.0 |
| GHSA-pch5-whg9-qr2r | npm | netmask | <2.0.1 | 2.0.1 |
References
- https://github.com/rs/node-netmask/commit/3f19a056c4eb808ea4a29f234274c67bc5a848f4
- https://security.netapp.com/advisory/ntap-20210604-0001/
- https://vuln.ryotak.me/advisories/6
- https://github.com/rs/node-netmask/commit/3f19a056c4eb808ea4a29f234274c67bc5a848f4
- https://security.netapp.com/advisory/ntap-20210604-0001/