CVE-2005-3084 in PSP
Summary
by MITRE
Buffer overflow in the TIFF library in the Photo Viewer for Sony PSP 2.0 firmware allows remote attackers to cause a denial of service via a crafted TIFF image.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 04/29/2019
The vulnerability identified as CVE-2005-3084 represents a critical buffer overflow flaw within the TIFF library implementation of Sony PSP 2.0 firmware's Photo Viewer application. This issue stems from inadequate input validation and memory management practices when processing specially crafted TIFF image files. The flaw exists in the handling of image data structures where the application fails to properly bounds-check buffer allocations, allowing maliciously formatted image data to overwrite adjacent memory regions. The vulnerability specifically affects the Photo Viewer component which is responsible for rendering TIFF format images on the PlayStation Portable device, making it accessible to attackers who can remotely deliver malicious image files through various network channels or physical media.
The technical exploitation of this buffer overflow occurs when the Photo Viewer application attempts to parse a malformed TIFF image file that contains oversized or improperly structured metadata fields. The TIFF library in the PSP firmware does not implement proper validation of image dimensions, data offsets, or field lengths, enabling an attacker to craft a TIFF file with maliciously sized data structures. When the vulnerable application processes this crafted image, the buffer overflow can overwrite critical program memory, potentially leading to arbitrary code execution or complete system crash. This vulnerability is categorized under CWE-121 as a stack-based buffer overflow, representing a classic memory safety issue where insufficient bounds checking allows data to be written beyond allocated buffer boundaries.
The operational impact of CVE-2005-3084 extends beyond simple denial of service, as it creates potential entry points for more sophisticated attacks within the PSP ecosystem. Remote attackers can leverage this vulnerability to disrupt normal device operation by causing the Photo Viewer application to crash or become unresponsive, effectively rendering the device unusable for image viewing functionality. The vulnerability's remote exploitability means attackers can deliver malicious TIFF files through network-based attacks or by distributing infected media, making it particularly dangerous in environments where users might encounter untrusted image content. The attack surface is further expanded due to the widespread use of TIFF format images and the Photo Viewer's integration within the device's core functionality, potentially affecting a large user base.
Mitigation strategies for this vulnerability require both immediate firmware updates and defensive programming practices. Sony should implement proper bounds checking and input validation within the TIFF library to prevent buffer overflows when processing image data structures. The implementation should follow secure coding guidelines that align with industry standards such as those outlined in the CERT Secure Coding Standards and the OWASP Secure Coding Practices. Additionally, network administrators and users should exercise caution when processing images from untrusted sources, and the device firmware should include enhanced memory protection mechanisms such as stack canaries or address space layout randomization to make exploitation more difficult. The vulnerability demonstrates the importance of proper memory management in embedded systems and highlights how seemingly benign image processing functions can become attack vectors when insufficient security controls are implemented. This issue also aligns with ATT&CK technique T1203 which describes exploitation of input validation vulnerabilities to achieve remote code execution or denial of service outcomes.