x86：影子堆栈与模拟存根的异常 (CVE-2023-46841)
CVE编号
CVE-2023-46841利用情况
暂无补丁情况
N/A披露时间
2024-03-20漏洞描述
Recent x86 CPUs offer functionality named Control-flow Enforcement Technology (CET). A sub-feature of this are Shadow Stacks (CET-SS). CET-SS is a hardware feature designed to protect against Return Oriented Programming attacks. When enabled, traditional stacks holding both data and return addresses are accompanied by so called "shadow stacks", holding little more than return addresses. Shadow stacks aren't writable by normal instructions, and upon function returns their contents are used to check for possible manipulation of a return address coming from the traditional stack. In particular certain memory accesses need intercepting by Xen. In various cases the necessary emulation involves kind of replaying of the instruction. Such replaying typically involves filling and then invoking of a stub. Such a replayed instruction may raise an exceptions, which is expected and dealt with accordingly. Unfortunately the interaction of both of the above wasn't right: Recovery involves removal of a call frame from the (traditional) stack. The counterpart of this operation for the shadow stack was missing.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。
参考链接 |
|
|---|---|
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://xenbits.xenproject.org/xsa/advisory-451.html |
受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | xen | * | Up to (excluding) 4.16.5-r7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | xen | * | Up to (excluding) 4.16.5-r7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | xen | * | Up to (excluding) 4.17.3-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.19 | xen | * | Up to (excluding) 4.18.0-r4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | xen | * | Up to (excluding) 4.11.4+107-gef32c7afa2-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_38 | xen | * | Up to (excluding) 4.17.2-7.fc38 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_39 | xen | * | Up to (excluding) 4.17.2-7.fc39 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_40 | xen | * | Up to (excluding) 4.18.0-6.fc40 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.5 | xen | * | Up to (excluding) 4.17.3_06-150500.3.24.1 | |||||
- 攻击路径 N/A
- 攻击复杂度 N/A
- 权限要求 N/A
- 影响范围 N/A
- 用户交互 N/A
- 可用性 N/A
- 保密性 N/A
- 完整性 N/A
| CWE-ID | 漏洞类型 |
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