The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass for HTTP multipart requests by submitting a payload that uses a character encoding scheme via the Content-Type or the deprecated Content-Transfer-Encoding multipart MIME header fields that will not be decoded and inspected by the web application firewall engine and the rule set. The multipart payload will therefore bypass detection. A vulnerable backend that supports these encoding schemes can potentially be exploited. 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 upgrade to 3.2.2 and 3.3.3 respectively. The mitigation against these vulnerabilities depends on the installation of the latest ModSecurity version (v2.9.6 / v3.0.8).
References
Link | Resource |
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https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/ | Patch Vendor Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/ | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/ | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/ | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html | Mailing List Third Party Advisory |
Configurations
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Information
Published : 2022-09-20 00:15
Updated : 2023-02-16 11:20
NVD link : CVE-2022-39956
Mitre link : CVE-2022-39956
JSON object : View
CWE
CWE-116
Improper Encoding or Escaping of Output
Products Affected
debian
- debian_linux
owasp
- owasp_modsecurity_core_rule_set
fedoraproject
- fedora