The OWASP ModSecurity Core Rule Set (CRS) is affected by a response body bypass. A client can issue an HTTP Accept header field containing an optional "charset" parameter in order to receive the response in an encoded form. Depending on the "charset", this response can not be decoded by the web application firewall. A restricted resource, access to which would ordinarily be detected, may therefore bypass detection. 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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3293-1 | modsecurity-crs security update |
Debian DLA |
DLA-4265-1 | modsecurity-crs security update |
EUVD |
EUVD-2022-42401 | The OWASP ModSecurity Core Rule Set (CRS) is affected by a response body bypass. A client can issue an HTTP Accept header field containing an optional "charset" parameter in order to receive the response in an encoded form. Depending on the "charset", this response can not be decoded by the web application firewall. A restricted resource, access to which would ordinarily be detected, may therefore bypass detection. 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. |
Fixes
Solution
upgrade to 3.2.2 or 3.3.3
Workaround
No workaround given by the vendor.
References
History
Thu, 29 May 2025 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Status: PUBLISHED
Assigner: NCSC.ch
Published:
Updated: 2025-05-29T13:44:06.356Z
Reserved: 2022-09-05T00:00:00.000Z
Link: CVE-2022-39957
Updated: 2024-08-03T12:07:42.939Z
Status : Modified
Published: 2022-09-20T07:15:12.353
Modified: 2024-11-21T07:18:33.830
Link: CVE-2022-39957
OpenCVE Enrichment
No data.
Debian DLA
EUVD