正文

teluu pjsip 使用共享资源的并发执行不恰当同步问题（竞争条件）

admin
admin V管理员 /0 评论 /17 阅读
0421
此篇文章发布距今已超过1102天，您需要注意文章的内容或图片是否可用！

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。
参考链接
https://github.com/pjsip/pjproject/commit/d5f95aa066f878b0aef6a64e60b61e8626e664cd
https://github.com/pjsip/pjproject/pull/2716
https://github.com/pjsip/pjproject/releases/tag/2.11.1
https://github.com/pjsip/pjproject/security/advisories/GHSA-cv8x-p47p-99wr
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
https://www.debian.org/security/2021/dsa-4999
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 asterisk * Up to
(excluding)
2.11.1-r0
运行在以下环境
系统 alpine_3.15 asterisk * Up to
(excluding)
2.11.1-r0
运行在以下环境
系统 alpine_edge asterisk * Up to
(excluding)
2.11.1-r0
运行在以下环境
系统 debian_10 asterisk * Up to
(excluding)
16.2.1~dfsg-1+deb10u2
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_9 asterisk * Up to
(excluding)
2.5.5~dfsg-6+deb9u3
运行在以下环境
系统 debian_sid asterisk * Up to
(excluding)
20210112.2.b757bac~ds1-1
阿里云评分 4.2
  • 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）