#VU101767 Resource exhaustion in fugit - CVE-2024-43380

Vulnerability identifier: #VU101767

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-2024-43380

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
fugit
Universal components / Libraries / Software for developers

Vendor: floraison

Description

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

The vulnerability exists due to fugit "natural" parser, that turns "every wednesday at 5pm" into "0 17 * * 3", accepted any length of input and went on attempting to parse it, not returning promptly, as expected. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

fugit: 0.9.0 - 1.11.0

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External links
https://github.com/floraison/fugit/security/advisories/GHSA-2m96-52r3-2f3g
https://github.com/floraison/fugit/issues/104
https://github.com/floraison/fugit/commit/ad2c1c9c737213d585fff0b51c927d178b2c05a5

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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.