漏洞信息
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Vulnerability Title
Netty: SNI Routing Bypass via Fragmented TLS ClientHello Causing Fallback to Default SslContext
Vulnerability Description
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Fina and 4.2.17.Final, io.netty.handler.ssl.SslClientHelloHandler#decode checks the wrong offset before reading the four-byte TLS handshake header, so a ClientHello whose handshake header spans records can cause an IndexOutOfBoundsException and invoke select(ctx, null). This selects the default SslContext instead of the SNI-specific context. In deployments where per-SNI clientAuth=REQUIRE is the sole mutual TLS gate, the default SslContext uses clientAuth=NONE or clientAuth=OPTIONAL, and no application-layer certificate verification exists, an unauthenticated remote attacker can bypass the protected route's mutual TLS requirement. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Vulnerability Type
对因果或异常条件的不恰当检查
Vulnerability Title
Netty 异常处理不当漏洞
Vulnerability Description
Netty是Netty团队开源的一个高性能网络通信框架。 Netty 4.1.137.Final之前版本和4.2.17.Final之前版本存在异常处理不当漏洞,该漏洞源于SslClientHelloHandler在读取TLS握手标头时检查了错误的偏移量,可能导致未经身份验证的远程攻击者绕过受保护路由的相互TLS要求。
CVSS Information
N/A
Vulnerability Type
N/A