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CVE-2017-16021

6.5 · MEDIUM

uri-js is a module that tries to fully implement RFC 3986.

Published Jun 4, 2018CWE-400EPSS 1.32%

Overview

CVE-2017-16021 is a medium-severity vulnerability. It was published on June 4, 2018 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

uri-js is a module that tries to fully implement RFC 3986. One of these features is validating whether or not a supplied URL is valid or not. To do this, uri-js uses a regular expression, This regular expression is vulnerable to redos. This causes the program to hang and the CPU to idle at 100% usage while uri-js is trying to validate if the supplied URL is valid or not. To check if you're vulnerable, look for a call to `require("uri-js").parse()` where a user is able to send their own input. This affects uri-js 2.1.1 and earlier.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/garycourt/uri-js/issues/12Refnodesecurity.io/advisories/100GitHubgithub.com/garycourt/uri-js/issues/12Refnodesecurity.io/advisories/100

How CyberStrike helps

Frequently asked questions

What is CVE-2017-16021?

CVE-2017-16021 is a medium-severity vulnerability. It was published on June 4, 2018 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2017-16021?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-16021?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-16021?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-16021 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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