CVE-2012-5679 in Photoshop Camera Raw
Summary
by MITRE
Buffer underflow in Adobe Photoshop Camera Raw before 7.3 allows attackers to execute arbitrary code via unspecified vectors.
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Analysis
by VulDB Data Team • 04/20/2021
Adobe Photoshop Camera Raw version 7.2 and earlier contains a buffer underflow vulnerability that could allow remote attackers to execute arbitrary code on affected systems. This flaw exists in the handling of malformed image data processed by the Camera Raw component, which is used for importing and processing raw image files from digital cameras. The vulnerability stems from insufficient bounds checking when processing specific image metadata or pixel data structures, creating a condition where an attacker can manipulate input data to overwrite adjacent memory locations. This type of vulnerability falls under the CWE-121 category of buffer underflow conditions, which represents a fundamental flaw in memory management where data is written to memory locations before the buffer boundary. The attack vector typically involves crafting a malicious raw image file that, when opened by an affected version of Photoshop Camera Raw, triggers the underflow condition and subsequently allows code execution with the privileges of the affected application. This vulnerability is particularly concerning because it can be exploited through social engineering attacks where users are tricked into opening malicious camera raw files, or through automated exploitation in web-based environments where such files are processed. The operational impact includes potential system compromise, data theft, and unauthorized access to sensitive information. Attackers could leverage this vulnerability to install malware, establish backdoors, or perform privilege escalation attacks. The exploitability of this vulnerability is enhanced by the widespread use of Adobe Photoshop and Camera Raw in professional and consumer environments, making it a significant threat vector. Organizations should note that this vulnerability aligns with ATT&CK technique T1059.007 for command and script interpreter, as successful exploitation could enable attackers to execute arbitrary commands on compromised systems. The underlying technical flaw represents a classic memory safety issue that has been addressed through proper bounds checking and input validation in subsequent versions of the software.
The buffer underflow in Adobe Photoshop Camera Raw affects the application's ability to properly validate input data from raw camera files, which are typically processed without extensive sanitization before being parsed by the Camera Raw engine. When the application encounters malformed data structures within these raw files, particularly in metadata fields or embedded color profiles, the insufficient boundary checks cause memory to be written to locations that were not allocated for that data. This memory corruption can overwrite critical program variables, return addresses, or function pointers, enabling attackers to redirect program execution flow. The vulnerability is particularly dangerous because Camera Raw files often contain complex metadata and embedded data that can be manipulated by attackers without requiring sophisticated knowledge of the underlying file format structure. The exploitation process typically involves creating a specially crafted raw file that, when processed by the vulnerable Camera Raw component, triggers the underflow condition and allows the attacker to inject and execute malicious code. This type of vulnerability is classified under CWE-121 and represents a fundamental flaw in how the software handles memory allocation and data validation. The security implications extend beyond simple code execution, as successful exploitation could provide attackers with complete control over the affected system, potentially leading to data breaches, system compromise, or further lateral movement within networks. The vulnerability's impact is amplified by the fact that many users regularly process images from various sources, including email attachments, web downloads, or social media, making the attack surface quite broad.
Mitigation strategies for this vulnerability should include immediate patching of Adobe Photoshop Camera Raw to version 7.3 or later, which contains the necessary fixes for the buffer underflow condition. Organizations should implement strict file validation procedures and restrict the processing of raw image files from untrusted sources. Network administrators should consider implementing content filtering solutions to prevent the download and execution of potentially malicious camera raw files. Security teams should monitor for indicators of compromise related to this vulnerability and maintain updated threat intelligence feeds. The remediation process should also include user education about the risks of opening unknown or untrusted image files, particularly those received through email or downloaded from unverified websites. Additionally, system hardening measures such as disabling unnecessary image processing capabilities, implementing application whitelisting policies, and using sandboxing techniques can reduce the potential impact of successful exploitation attempts. Organizations should also consider implementing automated vulnerability scanning to identify systems running vulnerable versions of the software. The fix for this vulnerability typically involves implementing proper bounds checking mechanisms and ensuring that all input data is validated before being processed by the Camera Raw engine. This remediation aligns with security best practices outlined in various cybersecurity frameworks and represents a standard approach to addressing memory safety issues in software applications. Regular security updates and patch management processes should be maintained to prevent similar vulnerabilities from being exploited in the future.