CVE-2011-2123 in Shockwave Player
Summary
by MITRE
Integer overflow in the Shockwave 3D Asset x32 component in Adobe Shockwave Player before 11.6.0.626 allows remote attackers to execute arbitrary code via a crafted subrecord in a DEMX chunk, which triggers a heap-based buffer overflow.
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Analysis
by VulDB Data Team • 01/19/2025
The vulnerability identified as CVE-2011-2123 represents a critical integer overflow flaw within Adobe Shockwave Player's handling of 3D asset files, specifically affecting versions prior to 11.6.0.626. This vulnerability resides in the x32 component responsible for processing Shockwave 3D Asset files, making it a prime target for remote code execution attacks. The flaw manifests when the player processes a maliciously crafted DEMX chunk containing a specially constructed subrecord that causes integer overflow conditions during memory allocation calculations.
The technical implementation of this vulnerability exploits a classic heap-based buffer overflow scenario where an integer overflow occurs during the calculation of memory allocation sizes for buffer operations. When the Shockwave Player encounters a malformed DEMX chunk with crafted subrecord data, the integer overflow results in insufficient memory allocation for the intended buffer operations. This miscalculation leads to heap corruption where subsequent memory operations overwrite adjacent memory regions, potentially allowing attackers to manipulate program execution flow through controlled data injection into heap memory locations. The vulnerability specifically affects the x32 component's processing pipeline, which handles 3D asset rendering and execution within the Shockwave Player environment.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with remote exploitation capabilities that can be leveraged across networked environments without requiring local system access. The vulnerability's remote exploitability means that malicious actors can deliver attacks through web browsers or other applications that support Shockwave content, making it particularly dangerous for widespread deployment. Attackers can craft malicious DEMX files that, when opened by an unpatched Shockwave Player, trigger the integer overflow condition and subsequent buffer overflow, potentially enabling full system compromise. This vulnerability represents a significant risk to enterprise environments where Shockwave Player remains installed, as it can be exploited through standard web browsing activities without user interaction beyond visiting malicious websites.
Security professionals should note this vulnerability's alignment with CWE-190, which specifically addresses integer overflow conditions that can lead to buffer overflows and memory corruption. The attack pattern follows typical exploit methodologies described in MITRE ATT&CK framework under T1203, which covers exploitation of remote services through code injection techniques. Organizations should prioritize immediate patching of affected Adobe Shockwave Player installations to mitigate this vulnerability, as the integer overflow condition creates a direct pathway for arbitrary code execution. Additionally, network administrators should implement content filtering measures to block malicious Shockwave content and consider disabling Shockwave Player plugins in web browsers where possible, as the vulnerability's exploitation requires the presence of an unpatched Shockwave Player component to be effective.