CVE-2006-5501 in AOL
Summary
by MITRE
Buffer overflow in the AOL.PicDownloadCtrl.1 ActiveX control (YGPPicDownload.dll) 9.2.3.0 in America Online (AOL) 9.0 Security Edition allows remote attackers to execute arbitrary code via the downloadFileDirectory property, a different vulnerability than CVE-2006-5502.
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Analysis
by VulDB Data Team • 04/25/2026
The vulnerability described in CVE-2006-5501 represents a critical buffer overflow flaw within the AOL.PicDownloadCtrl.1 ActiveX control component of America Online 9.0 Security Edition. This specific ActiveX control, identified through the YGPPicDownload.dll file version 9.2.3.0, presents a significant security risk that enables remote code execution when exploited by malicious actors. The vulnerability specifically manifests through the downloadFileDirectory property of the ActiveX control, which fails to properly validate input length before processing user-supplied data. This particular flaw distinguishes itself from CVE-2006-5502 by targeting a different code path within the same software ecosystem, highlighting the complexity of ActiveX-based security vulnerabilities in legacy internet applications.
The technical implementation of this buffer overflow vulnerability occurs when an attacker manipulates the downloadFileDirectory property of the AOL.PicDownloadCtrl.1 ActiveX control. The flaw arises from insufficient bounds checking within the control's handling of directory path strings, allowing an attacker to supply a maliciously crafted input that exceeds the allocated buffer space. When the ActiveX control processes this oversized input, it overwrites adjacent memory locations, potentially allowing an attacker to overwrite critical program execution pointers or inject malicious code into the target system's memory space. This type of vulnerability directly maps to CWE-121, which describes buffer overflow conditions where insufficient boundary checking allows data to be written beyond the allocated buffer limits, and may also align with CWE-787, which addresses out-of-bounds write vulnerabilities that occur when data is written to memory beyond the bounds of a buffer.
The operational impact of CVE-2006-5501 extends beyond simple remote code execution, as it represents a serious threat to system integrity and user security within the context of ActiveX-based web applications. Attackers can leverage this vulnerability to gain unauthorized access to affected systems, potentially escalating privileges and establishing persistent backdoors. The exploitation typically requires social engineering to convince users to visit malicious websites or open compromised email attachments that trigger the vulnerable ActiveX control. Once successfully exploited, the vulnerability allows attackers to execute arbitrary code with the privileges of the affected user, potentially leading to complete system compromise. This vulnerability aligns with ATT&CK technique T1190, which describes exploitation of ActiveX controls for code execution, and may also relate to T1059 for command execution and T1068 for privilege escalation.
Mitigation strategies for CVE-2006-5501 should focus on immediate remediation through software updates and system hardening measures. The most effective approach involves updating to the latest version of America Online 9.0 Security Edition or newer versions that contain patches for this specific vulnerability. Organizations should also implement browser security restrictions such as disabling ActiveX controls in web browsers or configuring security zones to prevent automatic execution of potentially malicious ActiveX components. Network-level protections including firewall rules that block access to known malicious domains and intrusion detection systems can help prevent exploitation attempts. Additionally, security awareness training for end users regarding the dangers of visiting untrusted websites or opening suspicious email attachments remains crucial in preventing successful exploitation of this vulnerability. The vulnerability demonstrates the importance of proper input validation in ActiveX controls and highlights the risks associated with legacy software components that may not receive regular security updates.