低危 matrix synapse 输入验证不恰当
CVE编号
CVE-2021-21394利用情况
暂无补丁情况
官方补丁披露时间
2021-04-13漏洞描述
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds.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。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 | matrix | synapse | * | From (excluding) 0.17.0 | Up to (excluding) 1.28.0 | ||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | matrix-synapse | * | Up to (excluding) 1.28.0-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | matrix-synapse | * | Up to (excluding) 1.28.0-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | matrix-synapse | * | Up to (excluding) 1.38.1-1.fc34 | |||||
- 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 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-20 | 输入验证不恰当 |
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