漏洞信息
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Vulnerability Title
OpenSIPS: SIP Message Smuggling via TCP Content-Length Integer Overflow
Vulnerability Description
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. In versions prior to 3.6.6 and 4.0.0-rc1, the TCP message framing layer parses the Content-Length header using unsigned int arithmetic with no overflow check. When an attacker sends a Content-Length value that overflows unsigned int (e.g., 4294967296), the framing layer computes a wrapped-around value (e.g., 0) and splits the TCP stream at the wrong boundary, causing the body of the first SIP message to be processed as a separate message and enabling SIP message smuggling. Because Content-Length is parsed in the transport layer before authentication, an unauthenticated, network-based attacker can smuggle arbitrary SIP messages over any TCP-based transport (proto_tcp, proto_tls, proto_ws, proto_wss) on any instance with TCP enabled, with no routing-script preconditions. This allows smuggled messages to bypass front-end SBC/proxy security policies, inherit the connection's authentication context, and evade rate limiting. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Vulnerability Type
整数溢出或超界折返
Vulnerability Title
OpenSIPS 数字错误漏洞
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之前版本存在数字错误漏洞,该漏洞源于TCP消息分帧层在解析Content-Length标头时使用无符号整数运算且未进行溢出检查,可能导致未经身份验证的网络攻击者通过发送溢出的Content-Length值实现SIP消息走私,绕过前端SBC/代理安全策略,继承连接的认证上下文,并规避速率限制。
CVSS Information
N/A
Vulnerability Type
N/A