WAF rules bypass in ModSecurity



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-1019
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 ModSecurity
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Trustwave

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU85913

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-1019

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass WAF rules

The vulnerability exists due to insufficient validation of user-supplied input when processing URL for path-based payloads. A remote attacker can use a specially crafted URL to bypass ModSecurity rules.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ModSecurity: 3.0.0 - 3.0.11

CPE2.3 External links

https://github.com/SpiderLabs/ModSecurity/releases/tag/v3.0.12


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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