CVE编号
CVE-2021-40528利用情况
POC 已公开补丁情况
官方补丁披露时间
2021-09-07漏洞描述
The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.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://eprint.iacr.org/2021/923 | |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=3462280f2... | |
| https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-... | |
| https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-... |
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 | gnupg | libgcrypt | * |
Up to (excluding) 1.9.4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | libgcrypt | * |
Up to (excluding) 1.8.8-r1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | libgcrypt | * |
Up to (excluding) 1.8.8-r1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | libgcrypt | * |
Up to (excluding) 1.8.8-r1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | libgcrypt | * |
Up to (excluding) 1.8.4-5+deb10u1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | libgcrypt | * |
Up to (excluding) 1.8.7-6 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | libgcrypt | * |
Up to (excluding) 1.7.6-2+deb9u4 |
|||||
- 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 POC 已公开
- 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
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