Denial of service in UAParser.js library



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-7733
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 UAParser.js
Web applications / JS libraries

Vendor Faisal Salman

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU47053

Risk: Medium

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

CVE-ID: CVE-2020-7733

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The package ua-parser-js before 0.7.22 are vulnerable to Regular Expression Denial of Service (ReDoS) via the regex for Redmi Phones and Mi Pad Tablets UA.

Mitigation

Install update from vendor's website.

Vulnerable software versions

UAParser.js: 0.7.0 - 0.7.21

CPE2.3 External links

https://github.com/faisalman/ua-parser-js/commit/233d3bae22a795153a7e6638887ce159c63e557d
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBFAISALMAN-674666
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-674665
https://snyk.io/vuln/SNYK-JS-UAPARSERJS-610226


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.



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