#VU87009 Input validation error in Rack - CVE-2024-26141

Vulnerability identifier: #VU87009

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-2024-26141

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Rack
Web applications / Modules and components for CMS

Vendor: Rack

Description

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

The vulnerability exists due to insufficient validation of user-supplied input within the Range request header in Rack. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Rack: 1.0.0, 1.1.0, 1.2.0, 1.3 - 1.3.10, 1.4 - 1.4.7, 1.5 - 1.5.5, 1.6 - 1.6.13, 2.0 - 2.0.9.4, 2.1.0 - 2.1.4.4, 2.2.0 - 2.2.8, 3.0.0 - 3.0.9

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External links
https://github.com/rack/rack/security/advisories/GHSA-xj5v-6v4g-jfw6
https://github.com/rack/rack/commit/4849132bef471adb21131980df745f4bb84de2d9
https://github.com/rack/rack/commit/62457686b26d33a15a254c7768c2076e8e02b48b
https://discuss.rubyonrails.org/t/possible-dos-vulnerability-with-range-header-in-rack/84944
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26141.yml

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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.