What is CVE-2021-29418?

CVE-2021-29418 is a medium-severity vulnerability in Netmask Project, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2021-03-30.

How severe is CVE-2021-29418?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-29418 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Netmask Project

CVE-2021-29418

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.017 (74.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Netmask_project Netmask
N/a — versions n/a

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-29418?: CVE-2021-29418 is a medium-severity vulnerability in Netmask Project, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2021-03-30.
How severe is CVE-2021-29418?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-29418 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.