CVE编号
CVE-2021-26717利用情况
暂无补丁情况
官方补丁披露时间
2021-02-19漏洞描述
An issue was discovered in Sangoma Asterisk 16.x before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6. When re-negotiating for T.38, if the initial remote response was delayed just enough, Asterisk would send both audio and T.38 in the SDP. If this happened, and the remote responded with a declined T.38 stream, then Asterisk would crash.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 |
|
|---|---|
| http://packetstormsecurity.com/files/161471/Asterisk-Project-Security-Advisor... | |
| http://seclists.org/fulldisclosure/2021/Feb/58 | |
| https://downloads.asterisk.org/pub/security/ | |
| https://downloads.asterisk.org/pub/security/AST-2021-002.html | |
| https://issues.asterisk.org/jira/browse/ASTERISK-29203 |
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 | digium | asterisk | * |
From (including) 16.0.0 |
Up to (excluding) 16.16.1 |
||||
| 运行在以下环境 | |||||||||
| 应用 | digium | asterisk | * |
From (including) 17.0.0 |
Up to (excluding) 17.9.2 |
||||
| 运行在以下环境 | |||||||||
| 应用 | digium | asterisk | * |
From (including) 18.0 |
Up to (excluding) 18.2.1 |
||||
| 运行在以下环境 | |||||||||
| 应用 | digium | certified_asterisk | 16.8 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | asterisk | * |
Up to (excluding) 16.16.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | asterisk | * |
Up to (excluding) 18.2.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | asterisk | * |
Up to (excluding) 18.2.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | asterisk | * |
Up to (excluding) 18.2.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | asterisk | * |
Up to (excluding) 18.2.1-r0 |
|||||
- 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 有限影响
- EXP成熟度 N/A
- 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 服务器失陷
- 全网数量 N/A
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