CVE-2008-3870 in Solaris
Summary
by MITRE
Integer overflow in sadmind in Sun Solaris 8 and 9 allows remote attackers to execute arbitrary code via a crafted RPC request that triggers a heap-based buffer overflow, related to improper memory allocation.
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Analysis
by VulDB Data Team • 05/26/2025
The vulnerability identified as CVE-2008-3870 represents a critical integer overflow condition within the sadmind service of Sun Solaris 8 and 9 operating systems. This flaw exists within the Remote Procedure Call (RPC) processing mechanism that handles system administration requests, specifically affecting the memory allocation routines used by the sadmind daemon. The issue stems from inadequate input validation and improper handling of integer values during memory allocation calculations, creating a scenario where maliciously crafted RPC requests can manipulate the system's memory management processes.
The technical exploitation of this vulnerability occurs through a carefully constructed RPC request that triggers an integer overflow condition in the memory allocation logic. When the sadmind service processes such malformed requests, the integer overflow causes the system to allocate insufficient memory for buffer operations, leading to a heap-based buffer overflow condition. This memory corruption allows remote attackers to overwrite critical memory locations and potentially execute arbitrary code with the privileges of the sadmind process, which typically runs with elevated system permissions. The vulnerability falls under CWE-190, Integer Overflow or Wraparound, and specifically relates to CWE-121, Stack-based Buffer Overflow, though the actual manifestation occurs in heap memory management rather than stack-based operations.
The operational impact of CVE-2008-3870 extends beyond simple remote code execution, as it provides attackers with a pathway to compromise entire Solaris systems through the sadmind service. This service is commonly enabled on Solaris systems for remote system administration, making the vulnerability particularly dangerous in enterprise environments where system management services are actively used. Attackers can leverage this vulnerability to gain unauthorized access to systems, potentially escalating privileges to root level, and establish persistent backdoors. The exploitability of this vulnerability is enhanced by the fact that sadmind typically listens on well-known RPC ports and requires minimal authentication for certain operations, making it an attractive target for automated exploitation tools.
Mitigation strategies for CVE-2008-3870 should prioritize immediate patching of affected Solaris systems with the official security updates provided by Sun Microsystems. Organizations should also implement network segmentation to restrict access to sadmind service ports and disable the service entirely if it is not required for system operations. Security monitoring should include detection of unusual RPC traffic patterns and anomalous memory allocation behaviors that might indicate exploitation attempts. According to ATT&CK framework, this vulnerability maps to T1059.007 for Command and Scripting Interpreter and T1068 for Exploitation for Privilege Escalation, requiring defensive measures that address both network-level access controls and host-based security monitoring. System administrators should also consider implementing IDS/IPS signatures specifically designed to detect the patterns associated with this vulnerability and maintain comprehensive system logging to facilitate forensic analysis in case of successful exploitation attempts.