CVE编号
CVE-2020-8794利用情况
EXP 已公开补丁情况
官方补丁披露时间
2020-02-26漏洞描述
OpenSMTPD （也称为OpenBSD SMTP服务器）是 OpenBSD 项目的一部分，一个免费的服务器端SMTP协议实现，通过RFC5321定义。OpenSMTPD < 6.6.4p1版本，在mta_io in mta_session.c的实现中存在越界读取漏洞，可被远程利用，成功的利用可导致攻击者以 root 身份执行注入到 envelope 文件中的任意命令。解决建议
升级至最新版本。
参考链接 |
|
|---|---|
| http://packetstormsecurity.com/files/156633/OpenSMTPD-Out-Of-Bounds-Read-Loca... | |
| http://seclists.org/fulldisclosure/2020/Feb/32 | |
| http://www.openwall.com/lists/oss-security/2020/02/26/1 | |
| http://www.openwall.com/lists/oss-security/2020/03/01/1 | |
| http://www.openwall.com/lists/oss-security/2020/03/01/2 | |
| http://www.openwall.com/lists/oss-security/2021/05/04/7 | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://usn.ubuntu.com/4294-1/ | |
| https://www.debian.org/security/2020/dsa-4634 | |
| https://www.openbsd.org/security.html | |
| https://www.openwall.com/lists/oss-security/2020/02/24/5 |
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 | opensmtpd | opensmtpd | * |
Up to (excluding) 6.6.4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | opensmtpd | * |
Up to (excluding) 6.6.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | opensmtpd | * |
Up to (excluding) 6.6.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | opensmtpd | * |
Up to (excluding) 6.6.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | opensmtpd | * |
Up to (excluding) 6.6.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | opensmtpd | * |
Up to (excluding) 6.0.3p1-5+deb10u4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | opensmtpd | * |
Up to (excluding) 6.0.2p1-2+deb9u3 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_30 | opensmtpd | * |
Up to (excluding) 6.6.4p1-1.fc30 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_31 | opensmtpd | * |
Up to (excluding) 6.6.4p1-1.fc31 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_32 | opensmtpd | * |
Up to (excluding) 6.6.4p1-2.fc32 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_7 | opensmtpd | * |
Up to (excluding) 1.0.4-2.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_8 | opensmtpd | * |
Up to (excluding) 6.6.4p1-1.el8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | opensmtpd | * |
Up to (excluding) 6.0.3p1-1ubuntu0.2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | opensmtpd | * |
Up to (excluding) 6.6.4p1-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | opensmtpd | * |
Up to (excluding) 6.6.4p1-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_20 | opensmtpd | * |
Up to (excluding) 6.0.3p1-5+deb10u4 |
|||||
- 攻击路径 远程
- 攻击复杂度 容易
- 权限要求 无需权限
- 影响范围 全局影响
- EXP成熟度 EXP 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 传输被破坏
- 服务器危害 服务器失陷
- 全网数量 N/A
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