CVE-2021-28918

Public Exploit

Description

Improper input validation of octal strings in netmask npm package v1.0.6 and below allows unauthenticated remote attackers to perform indeterminate SSRF, RFI, and LFI attacks on many of the dependent packages. A remote unauthenticated attacker can bypass packages relying on netmask to filter IPs and reach critical VPN or LAN hosts.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 85.90% Top 5%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory rootdaemon.com Third-Party Advisory netapp.com Third-Party Advisory bleepingcomputer.com Third-Party Advisory npmjs.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.npmjs.com/package/netmask product third party advisory
https://github.com/rs/node-netmask third party advisory
https://www.bleepingcomputer.com/news/security/critical-netmask-networking-bug-impacts-thousands-of-applications/ press/media coverage third party advisory exploit
https://github.com/advisories/GHSA-pch5-whg9-qr2r third party advisory
https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-011.md third party advisory exploit
https://security.netapp.com/advisory/ntap-20210528-0010/ third party advisory
https://rootdaemon.com/2021/03/29/vulnerability-in-netmask-npm-package-affects-280000-projects/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-28918?
CVE-2021-28918 has been scored as a critical severity vulnerability.
How to fix CVE-2021-28918?
To fix CVE-2021-28918, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28918 being actively exploited in the wild?
It is possible that CVE-2021-28918 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~86% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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