中危 Unicode's bidirectional (BiDi) override characters can cause trojan source attacks
CVE编号
CVE-2021-42574利用情况
暂无补丁情况
官方补丁披露时间
2021-11-01漏洞描述
A flaw was found in the way Unicode standards are implemented in the context of development environments, which have specialized requirements for rendering text. An attacker could exploit this to deceive a human reviewer by creating a malicious patch containing well placed BiDi characters. The special handling and rendering of those characters can be then used in an attempt to hide unexpected and potentially dangerous behaviour from the reviewer.解决建议
目前厂商已发布升级补丁以修复漏洞，补丁获取链接：https://access.redhat.com/security/cve/cve-2021-42574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 | |||||||||
| 应用 | unicode | unicode | * | Up to (excluding) 14.0.0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alibaba_cloud_linux_2.1903 | rust | * | Up to (excluding) 2.27-44.base.1.al7.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | rust | * | Up to (excluding) 1.56.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | rust | * | Up to (excluding) 1.56.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | rust | * | Up to (excluding) 1.56.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | rust | * | Up to (excluding) 1.56.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | rust | * | Up to (excluding) 1.56.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | gcc10 | * | Up to (excluding) 7.3.1-14.amzn2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2022 | gcc | * | Up to (excluding) 11.3.1-2.amzn2022.0.8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2023 | gcc | * | Up to (excluding) 11.3.1-4.amzn2023.0.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | annobin-annocheck | * | Up to (excluding) 11.2.1-1.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8.2 | binutils-devel | * | Up to (excluding) 2.30-73.0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_7 | rust | * | Up to (excluding) 2.27-44.base.el7_9.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | rust | * | Up to (excluding) 11.2.1-1.2.el8_5 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | rustc | * | Up to (including) 1.41.1+dfsg1-1~deb10u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | rustc | * | Up to (including) 1.48.0+dfsg1-2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | rustc | * | Up to (excluding) 1.57.0+dfsg1-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | rustc | * | Up to (including) 1.34.2+dfsg1-1~deb9u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | rustc | * | Up to (excluding) 1.57.0+dfsg1-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | rust | * | Up to (excluding) 1.56.1-1.fc33 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | rust | * | Up to (excluding) 1.56.1-1.fc34 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_35 | rust | * | Up to (excluding) 1.56.1-1.fc35 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_7 | rust | * | Up to (excluding) 1.56.1-1.el7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10 | binutils | * | Up to (excluding) 2.27-44.base.el7_9.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | binutils | * | Up to (excluding) 2.34-19.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10 | binutils | * | Up to (excluding) 2.27-44.base.el7_9.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | binutils | * | Up to (excluding) 2.34-19.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_7 | rust | * | Up to (excluding) 2.27-44.base.0.2.el7_9.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | rust | * | Up to (excluding) 11.2.1-1.2.0.1.el8_5 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_7 | binutils | * | Up to (excluding) 2.27-44.base.el7_9.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | rust | * | Up to (excluding) 11.2.1-1.2.el8_5 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | rustc | * | Up to (excluding) 1.57.0+dfsg1+llvm-0ubuntu1~20.04.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.04 | rustc | * | Up to (excluding) 1.57.0+dfsg1+llvm-0ubuntu2 | |||||
- 攻击路径 远程
- 攻击复杂度 复杂
- 权限要求 无需权限
- 影响范围 全局影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-94 | 对生成代码的控制不恰当（代码注入） |
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