#VU72085 Input validation error in ModSecurity - CVE-2022-48279

Vulnerability identifier: #VU72085

Vulnerability risk: Medium

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

CVE-ID: CVE-2022-48279

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ModSecurity
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Trustwave

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient validation of user-supplied input when parsing HTTP multipart requests. A remote attacker can send specially crafted input to the application and bypass the Web Application Firewall.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ModSecurity: 2.9.0 - 2.9.5, 3.0.0 - 3.0.7

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External links
https://github.com/SpiderLabs/ModSecurity/pull/2797
https://github.com/SpiderLabs/ModSecurity/pull/2795
https://github.com/SpiderLabs/ModSecurity/releases/tag/v3.0.8
https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/
https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.6
https://lists.debian.org/debian-lts-announce/2023/01/msg00023.html

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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.