CVE-2002-0885 in Solaris
Summary
by MITRE
Multiple buffer overflows in in.rarpd (ARP server) on Solaris, and possibly other operating systems including Caldera UnixWare and Open UNIX, allow remote attackers to execute arbitrary code, possibly via the functions (1) syserr and (2) error.
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Analysis
by VulDB Data Team • 01/21/2025
The vulnerability identified as CVE-2002-0885 represents a critical buffer overflow flaw in the in.rarpd daemon component of Solaris operating systems and potentially other Unix variants including Caldera UnixWare and Open UNIX. This vulnerability resides within the Address Resolution Protocol (ARP) server implementation, which serves as a fundamental network service responsible for mapping IP addresses to physical hardware addresses. The flaw specifically manifests in two primary functions: syserr and error, which are critical error handling routines within the ARP server daemon. These functions process error messages and system alerts that are transmitted across the network, making them prime targets for exploitation by remote attackers seeking to gain unauthorized system access.
The technical nature of this vulnerability stems from inadequate input validation and buffer management within the in.rarpd daemon. When the daemon receives malformed or excessively long error messages through network communication, it fails to properly bounds-check the incoming data before copying it into fixed-size buffers. This classic buffer overflow condition occurs because the system does not verify that the length of incoming data fits within allocated memory boundaries, allowing attackers to overwrite adjacent memory locations. The overflow can potentially overwrite critical program execution elements such as return addresses, function pointers, or stack canaries, enabling attackers to redirect program execution flow and inject malicious code. This type of vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a common attack vector that has been extensively documented in network service exploitation patterns.
The operational impact of this vulnerability extends beyond simple remote code execution, as it provides attackers with a pathway to gain elevated privileges on affected systems. Since in.rarpd typically runs with elevated privileges to perform network address resolution functions, successful exploitation could allow remote attackers to execute arbitrary code with system-level privileges. This presents a significant risk to network infrastructure, as the ARP server daemon is often a persistent service that remains active throughout system operation. The vulnerability affects systems where the in.rarpd service is enabled and listening on network interfaces, potentially exposing entire networks to compromise through a single vulnerable host. Attackers could leverage this flaw to establish persistent backdoors, perform reconnaissance activities, or escalate privileges to gain complete system control, making it particularly dangerous in enterprise environments where network services are frequently exposed to external threats.
Mitigation strategies for CVE-2002-0885 should focus on immediate patch application and network segmentation measures. Organizations must prioritize applying vendor security patches released for Solaris and related Unix systems, as these updates typically include proper bounds checking and memory management fixes for the affected functions. Network administrators should also consider disabling the in.rarpd service if it is not essential for operations, as this eliminates the attack surface entirely. Additional defensive measures include implementing network access controls to restrict access to ARP server ports, deploying intrusion detection systems to monitor for suspicious network traffic patterns, and conducting regular vulnerability assessments to identify similar buffer overflow conditions in other network services. From an ATT&CK framework perspective, this vulnerability maps to techniques involving remote code execution through network services and privilege escalation, emphasizing the importance of network service hardening and proper input validation across all system components. System administrators should also implement proper monitoring and logging of ARP-related activities to detect potential exploitation attempts and maintain audit trails for forensic analysis.