Inefficient regular expression complexity in Rack



Published: 2024-07-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-39316
CWE-ID CWE-1333
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Web applications / Modules and components for CMS

Vendor Rack

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Inefficient regular expression complexity

EUVDB-ID: #VU93791

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-39316

CWE-ID: CWE-1333 - Inefficient Regular Expression Complexity

Exploit availability: No

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 untrusted input with a regular expressions in HTTP Accept Headers Parsing. 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

Rack: 3.1.0 - 3.1.4

CPE2.3 External links

http://github.com/rack/rack/security/advisories/GHSA-cj83-2ww7-mvq7
http://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8f
http://github.com/rack/rack/commit/412c980450ca729ee37f90a2661f166a9665e058


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.



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