#VU87010 Incorrect Regular Expression in Rack - CVE-2024-25126
Published: March 4, 2024
Vulnerability identifier: #VU87010
Vulnerability risk: Medium
CVSSv4.0: 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-2024-25126
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Rack
Rack
Software vendor:
Rack
Rack
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 in content type parsing (2nd degree polynomial). A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
Remediation
Install update from vendor's website.
External links
- https://github.com/rack/rack/security/advisories/GHSA-22f2-v57c-j9cx
- https://github.com/rack/rack/commit/6efb2ceea003c4b195815a614e00438cbd543462
- https://github.com/rack/rack/commit/d9c163a443b8cadf4711d84bd2c58cb9ef89cf49
- https://discuss.rubyonrails.org/t/denial-of-service-vulnerability-in-rack-content-type-parsing/84941
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-25126.yml