Overview
CVE-2025-13805 describes a deserialization vulnerability identified in NutzBoot up to version 2.6.0-SNAPSHOT. This weakness resides within the getInputStream function of the HttpServletRpcEndpoint.java file, part of the LiteRpc-Serializer component. Successful exploitation of this vulnerability could potentially lead to remote code execution (RCE), although the attack complexity is considered high, and the exploitability is rated as difficult.
Technical Details
The vulnerability lies within the getInputStream function of the nutzcloud/nutzcloud-literpc/src/main/java/org/nutz/boot/starter/literpc/impl/endpoint/http/HttpServletRpcEndpoint.java file. The component LiteRpc-Serializer is susceptible to manipulation that can lead to deserialization of untrusted data. The precise mechanism that triggers the deserialization isn’t explicitly stated but generally involves crafting a malicious payload that, when deserialized by the application, executes arbitrary code. The vulnerability is remotely exploitable, meaning an attacker doesn’t require local access to the server.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) provides a standardized way to assess the severity of security vulnerabilities.
- Severity: LOW
- CVSS Score: 3.7
A CVSS score of 3.7 indicates a low severity vulnerability. While exploitable remotely, the high attack complexity and difficult exploitability contribute to the lower score. However, the public availability of an exploit means that the risk should still be addressed proactively.
Possible Impact
Although rated as low severity, successful exploitation of CVE-2025-13805 could have the following impacts:
- Remote Code Execution (RCE): An attacker could potentially execute arbitrary code on the affected server, leading to complete system compromise. Even with low severity, this is a potential concern.
- Data Breach: Depending on the attacker’s objectives and the application’s design, sensitive data could be accessed or exfiltrated.
- Denial of Service (DoS): A malicious payload could cause the application to crash or become unresponsive.
Mitigation and Patch Steps
To mitigate the risk posed by CVE-2025-13805, the following steps are recommended:
- Upgrade NutzBoot: Upgrade to a version of NutzBoot that addresses this vulnerability. Check the official NutzBoot project website or release notes for updated versions and security patches. If a patch is not yet available, consider the following temporary mitigation steps.
- Input Validation: Implement strict input validation and sanitization to prevent malicious data from being processed by the
getInputStreamfunction. - Disable Deserialization (If Possible): If deserialization is not a core requirement, consider disabling it altogether or restricting it to trusted sources.
- Web Application Firewall (WAF): Deploy a WAF to detect and block malicious requests that attempt to exploit this vulnerability. Configure the WAF with rules that specifically target deserialization attacks.
- Monitor Network Traffic: Monitor network traffic for suspicious activity that may indicate an attempted exploit.
