CVE-2007-6613 in libcdio
Summary
by MITRE
Stack-based buffer overflow in the print_iso9660_recurse function in iso-info (src/iso-info.c) in GNU Compact Disc Input and Control Library (libcdio) 0.79 and earlier allows context-dependent attackers to cause a denial of service (core dump) and possibly execute arbitrary code via a disk or image that contains a long joilet file name.
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Analysis
by VulDB Data Team • 12/18/2024
The vulnerability identified as CVE-2007-6613 represents a critical stack-based buffer overflow within the GNU Compact Disc Input and Control Library, specifically affecting versions 0.79 and earlier. This flaw resides in the print_iso9660_recurse function located in the iso-info component at src/iso-info.c. The issue manifests when processing optical media or image files containing excessively long joilet file names, creating a dangerous condition that can be exploited by context-dependent attackers to compromise system integrity.
The technical implementation of this vulnerability stems from inadequate input validation within the ISO 9660 file system parsing logic. The print_iso9660_recurse function fails to properly bounds-check file name lengths when processing joilet directory entries, which are used in ISO 9660 file systems to store Unicode file names. When a maliciously crafted disk or image file contains a joilet file name exceeding the allocated stack buffer size, the function writes beyond the intended memory boundaries, corrupting adjacent stack memory locations. This overflow behavior creates a classic stack corruption scenario that can lead to unpredictable program execution patterns.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially enable arbitrary code execution. Attackers exploiting this flaw can cause the affected application to crash with a core dump while simultaneously creating opportunities for code injection attacks. The vulnerability's context-dependent nature means that exploitation requires specific conditions involving the manipulation of ISO 9660 file system structures, particularly joilet directory entries. According to CWE classification, this represents a CWE-121: Stack-based Buffer Overflow, which is categorized as a fundamental memory safety issue that violates secure coding practices.
Systems utilizing GNU libcdio version 0.79 or earlier are at risk when processing untrusted optical media or image files, particularly in environments where automated media analysis tools are employed. The vulnerability's exploitation potential aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation could allow attackers to execute arbitrary code within the context of the affected application. Organizations deploying applications that depend on libcdio for optical media handling should consider this vulnerability as a potential entry point for privilege escalation attacks, particularly in environments where these tools process user-supplied media content.
The recommended mitigation strategy involves immediate upgrading to GNU libcdio version 0.80 or later, where this vulnerability has been addressed through proper input validation and buffer size enforcement. Additionally, system administrators should implement proper input sanitization procedures when processing optical media, particularly in environments where user-supplied content is processed. The fix implemented in subsequent versions typically involves tightening bounds checking on file name length parameters and implementing robust memory management practices that prevent stack corruption during ISO 9660 file system parsing operations. Organizations should also consider implementing network segmentation and access controls to limit exposure of systems that process optical media, particularly in high-risk environments where untrusted content might be encountered.