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Response body bypass in OWASP ModSecurity Core Rule Set via repeated HTTP Range header submission with a small byte range

CVE-2022-39958 First seen on SecPulse

Fix status by distribution

Fixed packages published by each distribution for this CVE

Original description The description as published by the source.

The OWASP ModSecurity Core Rule Set (CRS) is affected by a response body bypass to sequentially exfiltrate small and undetectable sections of data by repeatedly submitting an HTTP Range header field with a small byte range. A restricted resource, access to which would ordinarily be detected, may be exfiltrated from the backend, despite being protected by a web application firewall that uses CRS. Short subsections of a restricted resource may bypass pattern matching techniques and allow undetected access. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised to upgrade to 3.2.2 and 3.3.3 respectively and to configure a CRS paranoia level of 3 or higher.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

References

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