CVE编号
CVE-2017-2669利用情况
暂无补丁情况
官方补丁披露时间
2018-06-22漏洞描述
版本2.2.29之前的Dovecot很容易产生拒绝服务。当“dict”passdb和userdb用于用户身份验证时，IMAP / POP3客户端发送的用户名通过var_expand（）发送，以执行％变量扩展。发送特制的％变量字段可能导致内存使用过多，从而导致进程崩溃（并重新启动），或CPU使用率过高导致所有身份验证都挂起。解决建议
厂商已发布了漏洞修复程序，请及时关注更新：https://github.com/dovecot/core/commit/a3783f8a3c9cd816b51e77a922f82301512fcf22
参考链接 |
|
|---|---|
| http://www.openwall.com/lists/oss-security/2017/04/11/1 | |
| http://www.securityfocus.com/bid/97536 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669 | |
| https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html | |
| https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch | |
| https://www.debian.org/security/2017/dsa-3828 |
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 | dovecot | dovecot | * |
From (including) 2.2.26 |
Up to (including) 2.2.28 |
||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_24 | dovecot | * |
Up to (excluding) 2.2.29.1-1.fc24 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_24 | dovecot-debuginfo | * |
Up to (excluding) 2.2.29.1-1.fc24 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_24 | dovecot-devel | * |
Up to (excluding) 2.2.29.1-1.fc24 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_24 | dovecot-mysql | * |
Up to (excluding) 2.2.29.1-1.fc24 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_24 | dovecot-pgsql | * |
Up to (excluding) 2.2.29.1-1.fc24 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_24 | dovecot-pigeonhole | * |
Up to (excluding) 2.2.29.1-1.fc24 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_25 | dovecot | * |
Up to (excluding) 2.2.29.1-1.fc25 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_25 | dovecot-debuginfo | * |
Up to (excluding) 2.2.29.1-1.fc25 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_25 | dovecot-devel | * |
Up to (excluding) 2.2.29.1-1.fc25 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_25 | dovecot-mysql | * |
Up to (excluding) 2.2.29.1-1.fc25 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_25 | dovecot-pgsql | * |
Up to (excluding) 2.2.29.1-1.fc25 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_25 | dovecot-pigeonhole | * |
Up to (excluding) 2.2.29.1-1.fc25 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_26 | dovecot | * |
Up to (excluding) 2.2.29.1-1.fc26 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_26 | dovecot-debuginfo | * |
Up to (excluding) 2.2.29.1-1.fc26 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_26 | dovecot-devel | * |
Up to (excluding) 2.2.29.1-1.fc26 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_26 | dovecot-mysql | * |
Up to (excluding) 2.2.29.1-1.fc26 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_26 | dovecot-pgsql | * |
Up to (excluding) 2.2.29.1-1.fc26 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_26 | dovecot-pigeonhole | * |
Up to (excluding) 2.2.29.1-1.fc26 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_42.2 | dovecot | * |
Up to (excluding) 2.2.30.2-5.4.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_42.2 | dovecot-debuginfo | * |
Up to (excluding) 2.2.30.2-5.4.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_42.2 | dovecot-devel | * |
Up to (excluding) 2.2.30.2-5.4.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_42.2 | dovecot-mysql | * |
Up to (excluding) 2.2.30.2-5.4.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_42.2 | dovecot-pgsql | * |
Up to (excluding) 2.2.30.2-5.4.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_42.2 | dovecot-pigeonhole | * |
Up to (excluding) 2.2.30.2-5.4.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP1 | dovecot | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP1 | dovecot-debuginfo | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP1 | dovecot-devel | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP1 | dovecot-mysql | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP1 | dovecot-pgsql | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP1 | dovecot-pigeonhole | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP2 | dovecot | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP2 | dovecot-debuginfo | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP2 | dovecot-devel | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP2 | dovecot-mysql | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP2 | dovecot-pgsql | * |
Up to (excluding) 2.2-3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP2 | dovecot-pigeonhole | * |
Up to (excluding) 2.2-3.1 |
|||||
- 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 有限影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 100
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