Vulnerability Information
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Vulnerability Title
Calero VeraSMART < 2022 R1 .NET Remoting Arbitrary File Read Leading to ViewState RCE
Vulnerability Description
Calero VeraSMART versions prior to 2022 R1 expose an unauthenticated .NET Remoting HTTP service on TCP port 8001. The service publishes default ObjectURIs (including EndeavorServer.rem and RemoteFileReceiver.rem) and permits the use of SOAP and binary formatters with TypeFilterLevel set to Full. An unauthenticated remote attacker can invoke the exposed remoting endpoints to perform arbitrary file read and write operations via the WebClient class. This allows retrieval of sensitive files such as WebRoot\\web.config, which may disclose IIS machineKey validation and decryption keys. An attacker can use these keys to generate a malicious ASP.NET ViewState payload and achieve remote code execution within the IIS application context. Additionally, supplying a UNC path can trigger outbound SMB authentication from the service account, potentially exposing NTLMv2 hashes for relay or offline cracking.
CVSS Information
N/A
Vulnerability Type
关键功能的认证机制缺失
Vulnerability Title
Calero VeraSMART 代码问题漏洞
Vulnerability Description
Calero VeraSMART是美国Calero公司的一个电话计费软件。 Calero VeraSMART 2022 R1之前版本存在代码问题漏洞，该漏洞源于暴露未经身份验证的.NET Remoting HTTP服务，可能导致通过WebClient类执行任意文件读写，进而导致远程代码执行。
CVSS Information
N/A
Vulnerability Type
N/A