CVE-2009-1865 in Flash Player
Summary
by MITRE
Adobe Flash Player before 9.0.246.0 and 10.x before 10.0.32.18, and Adobe AIR before 1.5.2, allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code via unspecified vectors, related to a "null pointer vulnerability."
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/13/2021
Adobe Flash Player versions prior to 9.0.246.0 and 10.x versions before 10.0.32.18, along with Adobe AIR versions before 1.5.2, contained a critical null pointer vulnerability that exposed systems to potential exploitation. This vulnerability stemmed from improper handling of null pointer references within the multimedia framework, creating a pathway for malicious actors to manipulate application behavior through crafted content. The flaw manifested when the Flash Player encountered malformed or unexpected data structures that resulted in null pointer dereferences, leading to application instability.
The technical nature of this vulnerability aligns with CWE-476, which specifically addresses null pointer dereference conditions in software implementations. Attackers could exploit this weakness by delivering malicious Flash content that would trigger the null pointer exception, causing the application to crash or potentially allowing for arbitrary code execution. The vulnerability's impact extended beyond simple denial of service as it could be leveraged to bypass security controls and execute malicious payloads within the context of the user's session. This particular weakness demonstrated how seemingly benign pointer handling errors could create significant security risks in widely deployed software components.
The operational impact of this vulnerability was substantial given Flash Player's ubiquity across web browsers and operating systems. Organizations faced increased risk of system compromise, as the vulnerability could be exploited through standard web browsing activities without requiring user interaction beyond visiting malicious websites. The exploitability of this flaw was enhanced by the fact that Flash content was often automatically executed by browsers, making it difficult for users to protect themselves through simple browsing practices. Security analysts noted that the vulnerability could be particularly dangerous in enterprise environments where Flash Player was commonly used for business applications and internal training materials.
Mitigation strategies for this vulnerability required immediate patching of affected systems, with Adobe releasing versions 9.0.246.0 and 10.0.32.18 to address the null pointer dereference issues. Organizations implementing defense-in-depth approaches should have considered disabling Flash Player execution in web browsers where possible, particularly for users who did not require Flash functionality. Network administrators could have implemented web filtering solutions to block known malicious Flash content and monitored for exploitation attempts through intrusion detection systems. The vulnerability highlighted the importance of maintaining current software versions and implementing automated patch management processes to prevent exploitation of known security flaws. This particular case demonstrated how legacy software vulnerabilities could persist for extended periods, emphasizing the need for continuous security assessment and remediation practices across all software components in enterprise environments.