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CVE-2022-39958

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 202305-25
Posted May 22, 2023
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202305-25 - Multiple vulnerabilities have been discovered in ModSecurity Core Rule Set, the worst of which could result in bypassing the WAF. Versions greater than or equal to 3.3.4 are affected.

tags | advisory, vulnerability
systems | linux, gentoo
advisories | CVE-2021-35368, CVE-2022-39955, CVE-2022-39956, CVE-2022-39957, CVE-2022-39958
SHA-256 | 87eb2387fc19f1cc46ab6d777ec31009795da99de709f3296f43a6ec6f454b34
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