CVE-2011-2427 in Flash Player
Summary
by MITRE
Stack-based buffer overflow in the ActionScript Virtual Machine (AVM) component in Adobe Flash Player before 10.3.183.10 on Windows, Mac OS X, Linux, and Solaris, and before 10.3.186.7 on Android, allows attackers to execute arbitrary code or cause a denial of service via unspecified vectors.
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Analysis
by VulDB Data Team • 11/20/2021
The vulnerability identified as CVE-2011-2427 represents a critical stack-based buffer overflow within Adobe Flash Player's ActionScript Virtual Machine component. This flaw affects multiple operating systems including Windows, Mac OS X, Linux, and Solaris, with separate affected versions for Android platforms. The vulnerability exists in Flash Player versions prior to 10.3.183.10 for desktop platforms and 10.3.186.7 for Android systems. The buffer overflow occurs within the AVM which is responsible for executing ActionScript code, making it a fundamental component in the Flash Player's runtime environment.
The technical nature of this vulnerability stems from improper bounds checking within the ActionScript Virtual Machine's handling of memory operations. When processing certain malformed ActionScript code or media content, the AVM fails to validate input parameters against predetermined buffer limits, resulting in memory corruption that can be exploited by malicious actors. This particular flaw operates at the stack level, meaning that the overflow occurs in the program's call stack memory region where function parameters and return addresses are stored. The vulnerability allows attackers to manipulate the program execution flow by overwriting critical stack memory locations, potentially leading to arbitrary code execution or system crashes.
The operational impact of CVE-2011-2427 extends across multiple threat vectors and attack scenarios. Attackers can leverage this vulnerability through malicious web content, specially crafted flash files, or compromised websites that serve as delivery mechanisms. The exploitability of this flaw makes it particularly dangerous as it can be triggered through normal web browsing activities without requiring user interaction beyond visiting a malicious site. The vulnerability's presence across multiple platforms including desktop operating systems and mobile environments significantly amplifies its threat surface, making it a preferred target for cybercriminals seeking broad exploitation capabilities.
Security practitioners should recognize this vulnerability as aligning with CWE-121, which specifically addresses stack-based buffer overflow conditions, and it maps to several ATT&CK techniques including T1059.007 for execution through scripting and T1203 for exploitation of software vulnerabilities. The remediation strategy requires immediate deployment of Adobe's security patches, specifically updating to Flash Player versions 10.3.183.10 for desktop platforms and 10.3.186.7 for Android systems. Organizations should also implement network-based protections such as web application firewalls and content filtering solutions to block malicious flash content until full patch deployment is achieved. Additionally, security monitoring should focus on detecting anomalous flash player behavior and potential exploitation attempts through network traffic analysis and endpoint detection systems.