CVE-2007-4823 in Picasa
Summary
by MITRE
Multiple buffer overflows in Google Picasa have unspecified attack vectors and impact. NOTE: this information is based upon a vague pre-advisory.
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Analysis
by VulDB Data Team • 10/31/2017
The vulnerability identified as CVE-2007-4823 represents a critical security flaw in Google Picasa software that was discovered during the early 2000s era of software development. This particular vulnerability manifests as multiple buffer overflow conditions within the Picasa image processing and handling components, which are core functionalities of the application designed for photo management and editing. Buffer overflows occur when a program writes more data to a fixed-length buffer than it can accommodate, causing adjacent memory to be overwritten and potentially allowing malicious actors to execute arbitrary code. The vulnerability specifically affects Google Picasa versions prior to 3.0, which were widely distributed and used for personal photo organization and sharing purposes. Given the nature of Picasa's functionality, which involves processing various image formats including jpeg, png, and bmp files, the attack surface for this vulnerability was substantial as users frequently interacted with potentially malicious or corrupted image files from various sources.
The technical implementation of this buffer overflow vulnerability stems from inadequate input validation within Picasa's image parsing routines. When the application processes specially crafted image files, particularly those with malformed headers or oversized metadata fields, the program fails to properly bounds-check the data being read into memory buffers. This lack of proper validation creates opportunities for attackers to manipulate the memory layout of the running process, potentially leading to stack corruption or heap corruption depending on the specific implementation details. The unspecified attack vectors referenced in the original advisory suggest that multiple pathways existed for exploitation, possibly including file format parsing, network-based attacks, or social engineering scenarios where users would inadvertently open maliciously crafted image files. These buffer overflows typically align with CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflows, both of which are fundamental weaknesses in software security architecture.
The operational impact of CVE-2007-4823 extends beyond simple system compromise as it represents a significant threat to end-user security and privacy. Given that Picasa was designed for consumer use and often processed personal photographs, exploitation of this vulnerability could result in unauthorized access to sensitive user data, including personal images and potentially other files stored on the compromised system. The attack surface was particularly concerning because Picasa was frequently used to open images from email attachments, web downloads, and social media platforms, creating numerous potential entry points for attackers. From an adversarial perspective, this vulnerability would align with ATT&CK technique T1059, which covers command and control through application layer protocols, and T1068, which describes privilege escalation through local exploitation. The vulnerability's potential for remote code execution meant that attackers could leverage it to install malware, establish persistent backdoors, or perform data exfiltration without requiring user interaction beyond opening a malicious file.
Mitigation strategies for CVE-2007-4823 centered primarily on software updates and user education, as the vulnerability was ultimately resolved through the release of Picasa 3.0 and subsequent versions. Organizations and individuals were advised to immediately update to the patched versions of the software, which included enhanced input validation and memory management routines that prevented the buffer overflow conditions from being exploited. Security professionals recommended implementing additional protective measures such as restricting file type handling, implementing application whitelisting policies, and conducting regular security assessments of image processing workflows. The vulnerability also highlighted the importance of secure coding practices and proper input validation in consumer software, as the flaw existed in a widely used application that was not initially designed with robust security controls. Additionally, system administrators were encouraged to monitor for unusual file processing activities and implement network-based intrusion detection systems to identify potential exploitation attempts. The incident served as a catalyst for improved security practices in consumer software development and emphasized the need for regular security updates and vulnerability management processes across all software platforms, regardless of their intended user base or perceived risk level.