#VU96716 Incorrect Regular Expression in Async - CVE-2024-39249

Vulnerability identifier: #VU96716

Vulnerability 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-2024-39249

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Async
Web applications / JS libraries

Vendor: Caolan McMahon

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

Vulnerable software versions

Async: 2.0.0 - 2.0.1, 2.1.0 - 2.1.5, 2.2.0, 2.3.0, 2.4.0 - 2.4.1, 2.5.0, 2.6.0 - 2.6.4, 3.0.0 - 3.0.1, 3.1.0 - 3.1.1, 3.2.0 - 3.2.5

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External links
https://github.com/caolan/async/blob/v3.2.5/lib/autoInject.js#L6
https://github.com/caolan/async/blob/v3.2.5/lib/autoInject.js#L41
https://github.com/zunak/CVE-2024-39249
https://github.com/zunak/CVE-2024-39249/issues/1
https://github.com/caolan/async/issues/1975#issuecomment-2204528153

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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.