发布时间: 2022年9月27日
修改时间: 2024年10月31日
The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass by submitting a specially crafted HTTP Content-Type header field that indicates multiple character encoding schemes. A vulnerable back-end can potentially be exploited by declaring multiple Content-Type charset names and therefore bypassing the configurable CRS Content-Type header charset allow list. An encoded payload can bypass CRS detection this way and may then be decoded by the backend. 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.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | High | High |
| Attack Vector | Network | Network |
| CVSS评分 | 9.8 | 9.8 |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| Scope | Unchanged | Unchanged |
| Integrity | High | High |
| User Interaction | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2022-2141 | mod_security_crs security update | 2022年9月27日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | mod_security_crs | Fixed |
| KY3.4-5A | mod_security_crs | Fixed |
| KY3.5.1 | mod_security_crs | Fixed |
