漏洞信息
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Vulnerability Title
CoreDNS TSIG authentication bypass on encrypted DNS transports
Vulnerability Description
CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the tsig plugin can be bypassed on non-plain-DNS transports (DoT, DoH, DoH3, DoQ, and gRPC) because it trusts the transport writer's TsigStatus() instead of performing verification itself. The DoH and DoH3 writer's TsigStatus() always returns nil, the DoT server does not set TsigSecret on the dns.Server, and the DoQ and gRPC writers also unconditionally return nil. This allows an unauthenticated remote client to bypass TSIG-based authentication and access resources intended to be restricted behind a tsig require all policy. Plain DNS over TCP and UDP are not affected. This issue has been fixed in version 1.14.3.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Vulnerability Type
认证算法的不正确实现
Vulnerability Title
CoreDNS 安全漏洞
Vulnerability Description
CoreDNS是CoreDNS社区的一个 DNS 服务器。 CoreDNS 1.14.3之前版本存在安全漏洞,该漏洞源于tsig插件信任传输写入器的TsigStatus而非自行验证,可能导致未经身份验证的远程客户端绕过TSIG身份验证。
CVSS Information
N/A
Vulnerability Type
N/A