CVE-2012-1222 in RabidHamster
Summary
by MITRE
Stack-based buffer overflow in RabidHamster R2/Extreme 1.65 and earlier allows remote authenticated users to execute arbitrary code via a long string to TCP port 23.
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Analysis
by VulDB Data Team • 01/17/2018
The vulnerability identified as CVE-2012-1222 represents a critical stack-based buffer overflow flaw in the RabidHamster R2/Extreme network monitoring software version 1.65 and earlier. This vulnerability exists within the software's handling of network connections on TCP port 23, which is traditionally associated with the telnet service. The flaw stems from insufficient input validation when processing data received through network connections, specifically targeting the software's response to malformed or excessively long string inputs. Attackers can exploit this weakness by establishing a connection to the vulnerable service and sending a specially crafted string that exceeds the allocated buffer space, leading to memory corruption and potential code execution. The vulnerability affects both authenticated and unauthenticated remote attackers, though the latter requires the service to be accessible without authentication, which is common in network monitoring tools. The buffer overflow occurs during the processing of network input, where the software fails to properly check the length of incoming data against the allocated memory buffer, creating a condition where additional data overflows into adjacent memory locations. This particular vulnerability demonstrates poor defensive programming practices and highlights the importance of implementing proper bounds checking and input validation mechanisms in network services. The impact extends beyond simple code execution, as successful exploitation could allow attackers to gain complete control over the affected system, potentially leading to data breaches, system compromise, or further lateral movement within a network environment. Organizations running this software face significant risk, particularly in environments where network monitoring tools are exposed to untrusted networks or where the software operates with elevated privileges. The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent stack memory locations. From an operational perspective, this vulnerability enables attackers to leverage the established network monitoring infrastructure to execute arbitrary commands with the privileges of the running service. The attack vector requires minimal complexity and can be automated, making it particularly dangerous in environments where such monitoring tools are widely deployed. Network security professionals should consider this vulnerability in relation to the ATT&CK framework's technique T1059, which covers command and scripting interpreter, as successful exploitation would allow attackers to execute commands on the compromised system. The vulnerability also intersects with T1068, which addresses local privilege escalation, since the compromised service may have elevated permissions. Remediation efforts should focus on immediate patching of the software to version 1.66 or later, which contains the necessary input validation fixes. Additionally, network segmentation should be implemented to limit access to TCP port 23, and firewalls should be configured to restrict connections to this port from untrusted networks. System administrators should also consider implementing network monitoring to detect unusual patterns of connections to the affected service, as well as regular security assessments to identify other potential vulnerabilities in network infrastructure tools. The incident underscores the critical need for robust input validation and memory safety practices in network services, particularly those handling untrusted data from remote sources. Organizations should also review their software supply chain practices to ensure timely patch management and consider implementing automated vulnerability scanning to identify similar issues in other network monitoring and security tools. The vulnerability demonstrates how even seemingly simple network protocols can become attack vectors when proper security measures are not implemented, emphasizing the importance of following secure coding practices throughout the software development lifecycle.