CVE-2012-1853 in Windows
Summary
by MITRE
Stack-based buffer overflow in the Remote Administration Protocol (RAP) implementation in the LanmanWorkstation service in Microsoft Windows XP SP3 allows remote attackers to execute arbitrary code via crafted RAP response packets, aka "Remote Administration Protocol Stack Overflow Vulnerability."
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Analysis
by VulDB Data Team • 03/27/2021
The vulnerability identified as CVE-2012-1853 represents a critical stack-based buffer overflow within the Remote Administration Protocol implementation of the LanmanWorkstation service in Microsoft Windows XP Service Pack 3. This flaw exists in the handling of RAP response packets, creating a pathway for remote code execution that has significant implications for network security. The vulnerability specifically affects systems running Windows XP SP3 and demonstrates how legacy network protocols can contain fundamental security weaknesses that persist despite years of security improvements.
The technical implementation of this vulnerability stems from improper bounds checking within the RAP protocol handler of the LanmanWorkstation service. When the service processes incoming RAP response packets, it fails to adequately validate the size of data structures within these packets, allowing an attacker to craft malicious packets that exceed the allocated buffer space on the stack. This overflow condition occurs because the implementation does not properly verify packet lengths or enforce size constraints before copying data into fixed-size buffers. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, which is a well-documented and dangerous class of vulnerability that can lead to arbitrary code execution when exploited successfully.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass complete system compromise and potential network lateral movement. Attackers can leverage this vulnerability to gain unauthorized access to affected systems without requiring authentication, making it particularly dangerous in enterprise environments where Windows XP systems may still be operational despite end-of-life status. The vulnerability's remote exploitation capability means that attackers can target systems from outside the network perimeter, potentially leading to widespread compromise across multiple systems. From an attack framework perspective, this vulnerability aligns with ATT&CK technique T1075 which covers use of legitimate credentials and T1059 which covers command and script interpretation, as successful exploitation would allow attackers to execute arbitrary commands on compromised systems.
Mitigation strategies for CVE-2012-1853 should prioritize immediate system updates and network segmentation measures to prevent exploitation. Microsoft released security patches through Windows Update that addressed this vulnerability by implementing proper bounds checking and input validation for RAP response packets. Organizations should also implement network monitoring to detect suspicious RAP traffic patterns and consider disabling unnecessary network services that expose the vulnerable LanmanWorkstation functionality. The vulnerability highlights the importance of maintaining up-to-date security patches and the dangers of continuing to operate unsupported operating systems in production environments. Security teams should also consider implementing network access controls and firewall rules to limit exposure to RAP traffic while ensuring that legacy systems are properly isolated from critical network segments to minimize potential attack surface expansion.