Type Confusion in coreruleset

1) Type Confusion

EUVDB-ID: #VU78624

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-38199

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected application does not block multiple Content-Type headers. A remote attacker can pass specially crafted data to the application, trigger a type confusion error and bypass a WAF.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OWASP ModSecurity Core Rule Set (CRS): 3.0.0 - 3.3.4

CPE2.3

• cpe:2.3:a:owasp:coreruleset:3.0.0:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.0.1:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.0.2:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.1.0:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.1.1:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.1.2:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.2.0:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.2.1:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.2.2:*:*:*:*:modsecurity:*:*
• cpe:2.3:a:owasp:coreruleset:3.2.3:*:*:*:*:modsecurity:*:*

External links

https://github.com/coreruleset/coreruleset/issues/3191
https://github.com/coreruleset/coreruleset/pull/3237
https://github.com/advisories/GHSA-662c-vg67-m327

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.