中危 teluu pjsip 使用共享资源的并发执行不恰当同步问题（竞争条件）
CVE编号
CVE-2021-32686利用情况
暂无补丁情况
官方补丁披露时间
2021-07-24漏洞描述
PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.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 | teluu | pjsip | * | Up to (excluding) 2.11.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | pjproject | * | Up to (excluding) 2.11.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | pjproject | * | Up to (excluding) 2.11.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | pjproject | * | Up to (excluding) 2.11.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | pjproject | * | Up to (excluding) 2.11.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | pjproject | * | Up to (excluding) 2.11.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | pjproject | * | Up to (excluding) 2.11.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | asterisk | * | Up to (excluding) 1:16.16.1~dfsg-2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | asterisk | * | Up to (excluding) 1:16.16.1~dfsg-1+deb11u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | ring | * | Up to (excluding) 20230206.0~ds1-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | pjproject | * | Up to (excluding) 2.5.5~dfsg-6+deb9u3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | asterisk | * | Up to (excluding) 1:16.16.1~dfsg-2 | |||||
- 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 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 服务器失陷
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-362 | 使用共享资源的并发执行不恰当同步问题（竞争条件） |
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