CVE-2013-3663 in SketchUp
Summary
by MITRE
Heap-based buffer overflow in paintlib, as used in Trimble SketchUp (formerly Google SketchUp) before 8 Maintenance 3, allows remote attackers to execute arbitrary code via a crafted RLE8 compressed BMP.
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Analysis
by VulDB Data Team • 12/25/2024
The vulnerability identified as CVE-2013-3663 represents a critical heap-based buffer overflow flaw within paintlib, a graphics library component that was integral to Trimble SketchUp's image processing capabilities. This vulnerability specifically affects versions of SketchUp prior to 8 Maintenance 3, indicating a long-standing issue that was not addressed until a significant maintenance update. The flaw manifests when the software processes RLE8 compressed bitmap files, which are commonly used in graphic applications for efficient image storage and transmission. The vulnerability's remote exploitation capability means that attackers could potentially compromise systems without requiring local access, making it particularly dangerous in networked environments.
The technical nature of this vulnerability falls under CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to write beyond allocated memory boundaries. In the context of paintlib's implementation, the RLE8 decompression routine fails to properly validate the size of data being written to heap-allocated buffers, creating opportunities for memory corruption. When a maliciously crafted RLE8 compressed BMP file is processed, the decompression algorithm does not adequately verify that decompressed data fits within pre-allocated buffer space, allowing attackers to overwrite adjacent memory regions. This memory corruption can potentially be leveraged to overwrite critical program structures, function pointers, or return addresses, enabling arbitrary code execution.
The operational impact of CVE-2013-3663 extends beyond simple remote code execution, as it represents a sophisticated attack vector that could be exploited through various delivery mechanisms including email attachments, web downloads, or file sharing platforms. Attackers could craft malicious BMP files that appear legitimate to users but contain carefully constructed RLE8 data streams designed to trigger the buffer overflow during normal image processing operations. The vulnerability's exploitation potential aligns with ATT&CK technique T1059.007, which covers command and scripting interpreter usage, as successful exploitation could lead to full system compromise. Organizations using affected versions of SketchUp faced significant risk exposure, as the software was widely deployed in professional design and engineering environments where users frequently opened files from unknown sources.
Mitigation strategies for CVE-2013-3663 centered on immediate software updates to versions 8 Maintenance 3 or later, which contained patches addressing the buffer overflow in paintlib's RLE8 decompression routine. System administrators should have implemented comprehensive patch management policies to ensure all instances of SketchUp were updated promptly. Additional defensive measures included network segmentation to limit exposure, email filtering to block suspicious BMP attachments, and user education regarding safe file handling practices. The vulnerability highlighted the importance of proper input validation and bounds checking in graphics processing libraries, as demonstrated by the ATT&CK technique T1203, which addresses legitimate program execution through manipulation of program execution flow. Organizations should have also considered implementing application whitelisting policies to restrict execution of untrusted graphics files and deployed intrusion detection systems to monitor for exploitation attempts targeting this specific vulnerability pattern.