Regular expression denial of service in html-parse-stringify

1) Incorrect regular expression

EUVDB-ID: #VU76187

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-2021-23346

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

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

Html-parse-stringify: 1.0.0 - 2.0.0

CPE2.3

• cpe:2.3::html-parse-stringify_project:html-parse-stringify:1.0.0:*:*:*:*:*:*:
• cpe:2.3::html-parse-stringify_project:html-parse-stringify:1.0.1:*:*:*:*:*:*:
• cpe:2.3::html-parse-stringify_project:html-parse-stringify:1.0.2:*:*:*:*:*:*:

External links

http://github.com/HenrikJoreteg/html-parse-stringify/blob/master/lib/parse.js%23L2
http://github.com/HenrikJoreteg/html-parse-stringify/commit/c7274a48e59c92b2b7e906fedf9065159e73fe12
http://github.com/rayd/html-parse-stringify2/blob/master/lib/parse.js%23L2
http://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1080633
http://snyk.io/vuln/SNYK-JS-HTMLPARSESTRINGIFY-1079306
http://snyk.io/vuln/SNYK-JS-HTMLPARSESTRINGIFY2-1079307

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.