Resource exhaustion in useragent package for NPM

1) Resource exhaustion

EUVDB-ID: #VU18600

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: N/A

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 regular expression when passing long user-agent strings. A remote attacker can trigger resource exhaustion and perform a regular expression denial of service (ReDoS) attack.

Mitigation

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

Vulnerable software versions

useragent: 0.1.0 - 2.3.0

CPE2.3

• cpe:2.3:a:node_js_foundation:useragent:0.1.0:*:*:*:*:npm:*:*
• cpe:2.3:a:node_js_foundation:useragent:0.1.1:*:*:*:*:npm:*:*
• cpe:2.3:a:node_js_foundation:useragent:0.1.2:*:*:*:*:npm:*:*

External links

https://snyk.io/vuln/SNYK-JS-USERAGENT-174737

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.