#VU54394 Incorrect Regular Expression in Lodash - CVE-2020-28500

Vulnerability identifier: #VU54394

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-28500

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Lodash
Web applications / JS libraries

Vendor: Lodash

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 update from vendor's website.

Vulnerable software versions

Lodash: 4.0.0 - 4.17.20

---

External links
https://github.com/lodash/lodash/blob/npm/trimEnd.js%23L8
https://github.com/lodash/lodash/pull/5065
https://security.netapp.com/advisory/ntap-20210312-0006/
https://snyk.io/vuln/SNYK-JAVA-ORGFUJIONWEBJARS-1074896
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074894
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074892
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBLODASH-1074895
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074893
https://snyk.io/vuln/SNYK-JS-LODASH-1018905

---

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.