漏洞信息
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Vulnerability Title
OpenSIPS: Denial of Service in watcherinfo XML generation from oversized watcher URI
Vulnerability Description
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Versions prior to 3.6.6 and 4.0.0-rc1 contain a denial of service vulnerability in the watcherinfo generation functionality. An attacker can create an oversized watcher entry by sending a SUBSCRIBE Event: presence request with a long From URI, and then trigger presence.winfo watcherinfo XML generation for the same presentity. OpenSIPS copies the stored watcher URI into a fixed-size stack buffer, overflowing it and crashing the process. A remote attacker can crash an OpenSIPS worker in deployments that expose handle_subscribe() and allow watcherinfo (presence.winfo) generation. The issue is configuration-dependent because the presence and presence_xml modules must be loaded and SUBSCRIBE routing must be reachable. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Vulnerability Type
栈缓冲区溢出
Vulnerability Title
OpenSIPS 缓冲区错误漏洞
Vulnerability Description
OpenSIPS是OpenSIPS组织开源的一个 GPL 许可的 SIP 服务器实现。 OpenSIPS 3.6.6之前版本和4.0.0-rc1之前版本存在缓冲区错误漏洞,该漏洞源于watcherinfo生成功能中,攻击者通过发送带有长From URI的SUBSCRIBE Event: presence请求创建过大的watcher条目,触发watcherinfo XML生成时将存储的watcher URI复制到固定大小的栈缓冲区导致溢出,可能导致进程崩溃,远程攻击者可造成拒绝服务。
CVSS Information
N/A
Vulnerability Type
N/A