#VU49301 Input validation error in urijs - CVE-2020-26291

Vulnerability identifier: #VU49301

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-26291

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
urijs
Web applications / Modules and components for CMS

Vendor: True Push

Description

The vulnerability allows a remote attacker to perform spoofing attacks.

The vulnerability exists due to insufficient validation of user-supplied hostname. the hostname can be spoofed by using a backslash (\) character followed by an at (@) character. If the hostname is used in security decisions, the decision may be incorrect. Depending on library usage and attacker intent, impacts may include allow/block list bypasses, SSRF attacks, open redirects, or other undesired behavior.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

urijs: 1.16.1 - 1.19.3

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External links
https://github.com/medialize/URI.js/commit/b02bf037c99ac9316b77ff8bfd840e90becf1155
https://github.com/medialize/URI.js/releases/tag/v1.19.4
https://github.com/medialize/URI.js/security/advisories/GHSA-3329-pjwv-fjpg
https://www.npmjs.com/package/urijs

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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.