Vulnerability identifier: #VU76389

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7754

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Npm-user-validate
/

Vendor: npm Inc.

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when processing regular expressions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Npm-user-validate: 0 - 1.0.0

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External links
http://github.com/npm/npm-user-validate/commit/c8a87dac1a4cc6988b5418f30411a8669bef204e
http://github.com/npm/npm-user-validate/security/advisories/GHSA-xgh6-85xh-479p
http://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019353
http://snyk.io/vuln/SNYK-JS-NPMUSERVALIDATE-1019352

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.