CVE-2008-3869 in Solaris
Summary
by MITRE
Heap-based buffer overflow in sadmind in Sun Solaris 8 and 9 allows remote attackers to execute arbitrary code via a crafted RPC request, related to improper decoding of request parameters.
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Analysis
by VulDB Data Team • 08/11/2021
The vulnerability identified as CVE-2008-3869 represents a critical heap-based buffer overflow within the sadmind service of Sun Solaris 8 and 9 operating systems. This flaw exists in the remote procedure call (RPC) processing mechanism where the sadmind service fails to properly validate and decode incoming request parameters. The issue arises from inadequate bounds checking during the handling of RPC messages, specifically when processing malformed or crafted parameter data that exceeds allocated memory buffers. This vulnerability falls under the Common Weakness Enumeration category CWE-121, which describes heap-based buffer overflow conditions where insufficient boundary checking allows attackers to overwrite adjacent memory locations. The sadmind service, which provides system administration functionality through RPC interfaces, becomes a prime target for exploitation due to its network accessibility and the privileged nature of the operations it performs.
The technical exploitation of this vulnerability enables remote attackers to execute arbitrary code with the privileges of the sadmind service process, which typically runs with elevated system permissions. When a malicious RPC request is sent to the vulnerable system, the malformed parameter data triggers the buffer overflow condition in the heap memory allocation. This overflow allows attackers to overwrite critical memory structures including return addresses and function pointers, enabling them to redirect program execution flow to malicious code injected into the heap. The attack vector requires no authentication for exploitation, making it particularly dangerous as it can be launched from any remote location without prior access credentials. The vulnerability demonstrates characteristics consistent with the ATT&CK technique T1190, which involves exploiting vulnerabilities in remote services to gain initial access to target systems.
The operational impact of CVE-2008-3869 extends beyond simple code execution to potentially compromise entire system availability and integrity. Successful exploitation can result in complete system takeover, allowing attackers to establish persistent backdoors, escalate privileges further, or use the compromised system as a launch point for attacks against other networked systems. The vulnerability affects multiple versions of Sun Solaris, creating widespread exposure across enterprise environments that had not yet implemented proper security updates. Organizations running these older operating systems face significant risk of unauthorized access and data breaches, as the compromised sadmind service can provide attackers with elevated privileges to perform system administration tasks. The memory corruption effects can also lead to system crashes and denial of service conditions, potentially disrupting critical business operations and services that depend on the affected systems. Remediation efforts require immediate patching of the Solaris operating systems or implementation of network-level firewalls to block RPC traffic to the affected service ports, with the latter serving as a temporary mitigation measure until proper security updates can be deployed.