CVE编号
CVE-2021-21404利用情况
暂无补丁情况
官方补丁披露时间
2021-04-07漏洞描述
Syncthing is a continuous file synchronization program. In Syncthing before version 1.15.0, the relay server `strelaysrv` can be caused to crash and exit by sending a relay message with a negative length field. Similarly, Syncthing itself can crash for the same reason if given a malformed message from a malicious relay server when attempting to join the relay. Relay joins are essentially random (from a subset of low latency relays) and Syncthing will by default restart when crashing, at which point it's likely to pick another non-malicious relay. This flaw is fixed in version 1.15.0.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://github.com/syncthing/syncthing/commit/fb4fdaf4c0a79c22cad000c42ac1394... | |
| https://github.com/syncthing/syncthing/releases/tag/v1.15.0 | |
| https://github.com/syncthing/syncthing/security/advisories/GHSA-x462-89pf-6r5h | |
| https://pkg.go.dev/github.com/syncthing/syncthing |
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 | syncthing | syncthing | * |
Up to (excluding) 1.15.0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | syncthing | * |
Up to (excluding) 1.12.1-r1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | syncthing | * |
Up to (excluding) 1.15.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | syncthing | * |
Up to (excluding) 1.15.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | syncthing | * |
Up to (excluding) 1.15.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | syncthing | * |
Up to (excluding) 1.0.0~ds1-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | syncthing | * |
Up to (excluding) 1.12.1~ds1-2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | syncthing | * |
Up to (excluding) 0.14.18+dfsg1-2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | syncthing | * |
Up to (excluding) 1.12.1~ds1-2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_8 | syncthing | * |
Up to (excluding) 1.18.6-3.el8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | syncthing | * |
Up to (excluding) 1.15.1-lp152.2.3.1 |
|||||
- 攻击路径 远程
- 攻击复杂度 困难
- 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 无影响
- 数据完整性 无影响
- 服务器危害 DoS
- 全网数量 N/A
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