CVE-2013-2600 in MiniUPnPd
Summary
by MITRE
MiniUPnPd has information disclosure use of snprintf()
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Analysis
by VulDB Data Team • 02/01/2024
The vulnerability identified as CVE-2013-2600 affects MiniUPnPd, a widely deployed implementation of the Universal Plug and Play protocol that facilitates automatic network configuration for devices. This issue stems from improper handling of the snprintf function within the upnpsoap.c file, specifically in the build_wan_connection_device_desc function. The flaw manifests when the software processes incoming SOAP requests without adequate input validation, creating a potential information disclosure scenario that can be exploited by remote attackers.
The technical root cause involves the insecure use of snprintf function calls where the return value is not properly checked or handled, leading to potential buffer overflows or information leakage. When MiniUPnPd processes malformed SOAP requests containing specially crafted payloads, the insufficient validation of snprintf return values can result in memory contents being inadvertently exposed to attackers. This vulnerability falls under the category of CWE-121, which describes stack-based buffer overflow conditions, and CWE-200, which covers information exposure. The improper handling of snprintf return values creates a path where attackers can manipulate the software's behavior to extract sensitive data from memory locations.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can potentially enable more sophisticated attacks. Remote attackers who successfully exploit this vulnerability can access memory contents that may contain sensitive information such as session tokens, configuration data, or other confidential parameters. The vulnerability is particularly concerning in network environments where MiniUPnPd is deployed as part of router firmware or network infrastructure devices, as these systems often handle critical network configuration and user data. Attackers could leverage this weakness to gain insights into the internal workings of the device, potentially leading to further exploitation opportunities or targeted attacks against connected systems.
Mitigation strategies for CVE-2013-2600 should focus on immediate software updates and code modifications to properly validate snprintf return values. Organizations should prioritize applying patches from upstream MiniUPnPd maintainers or implementing custom fixes that ensure proper error handling for all snprintf operations. The recommended approach involves checking the return values of snprintf calls and handling potential failures gracefully without exposing memory contents. Network administrators should also consider implementing network segmentation and access controls to limit potential attack surfaces, while monitoring for suspicious network traffic patterns that might indicate exploitation attempts. This vulnerability demonstrates the importance of proper input validation and error handling in network services, aligning with ATT&CK technique T1071.004 for application layer protocol tunneling and T1005 for data from local system. Organizations should also consider implementing intrusion detection systems to monitor for exploitation attempts and ensure that all network devices running MiniUPnPd are regularly updated to prevent similar vulnerabilities from being exploited in the future.