improper input validation in URI.js

1) Input validation error

EUVDB-ID: #VU66816

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-27516

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of strings that contain backslash, such as "http:/", which is interpreted as as a relative path. A remote attacker can pass a malformed URI to the application and read contents local files.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

urijs: 1.0.0 - 1.19.5

CPE2.3

• cpe:2.3:a:truepushplugin:urijs:1.0.0:*:*:*:*:npm:*:*
• cpe:2.3:a:truepushplugin:urijs:1.1.0:*:*:*:*:npm:*:*
• cpe:2.3:a:truepushplugin:urijs:1.2.0:*:*:*:*:npm:*:*

External links

https://github.com/medialize/URI.js/commit/a1ad8bcbc39a4d136d7e252e76e957f3ece70839
https://github.com/medialize/URI.js/releases/tag/v1.19.6
https://advisory.checkmarx.net/advisory/CX-2021-4305

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.