Regular expression DoS in url-regex



Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2020-7661
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
 url-regex
Web applications / Modules and components for CMS

Vendor Kiwys

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU45806

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-2020-7661

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources while processing regular expressions. A remote attacker can pass a very long string in String.test and perform a denial of service (DoS) attack.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

url-regex: 1.0.2 - 5.0.0

CPE2.3 External links

https://github.com/kevva/url-regex/issues/70
https://snyk.io/vuln/SNYK-JS-URLREGEX-569472
https://www.npmjs.com/advisories/1550


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.



###SIDEBAR###