CVE-2021-29418

low-risk
Published 2021-03-30

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.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Netmask Project

References (6)

Patch https://github.com/rs/node-netmask/commit/3f19a056c4eb808ea4a29f234274c67bc5a848...
Third Party Advisory https://security.netapp.com/advisory/ntap-20210604-0001/
Third Party Advisory https://vuln.ryotak.me/advisories/6
Patch https://github.com/rs/node-netmask/commit/3f19a056c4eb808ea4a29f234274c67bc5a848...
Third Party Advisory https://security.netapp.com/advisory/ntap-20210604-0001/
Third Party Advisory https://vuln.ryotak.me/advisories/6
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal