CVE-2012-1108 in TagLib
Summary
by MITRE
The parse function in ogg/xiphcomment.cpp in TagLib 1.7 and earlier allows remote attackers to cause a denial of service (crash) via a crafted vendorLength field in an ogg file.
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Analysis
by VulDB Data Team • 12/13/2021
The vulnerability identified as CVE-2012-1108 represents a critical denial of service flaw within the TagLib library version 1.7 and earlier, specifically affecting the parsing functionality of ogg files through the ogg/xiphcomment.cpp component. This issue stems from insufficient input validation mechanisms that fail to properly handle malformed vendorLength fields within ogg file structures. The flaw enables remote attackers to craft malicious ogg files that trigger unexpected behavior in applications utilizing TagLib for audio metadata processing, ultimately leading to application crashes and system instability.
The technical root cause of this vulnerability lies in the improper bounds checking and validation of the vendorLength field during the parsing process of ogg files. When TagLib encounters an ogg file with an excessively large or malformed vendorLength value, the parsing function fails to validate the input parameters before proceeding with memory allocation or data processing operations. This lack of proper input sanitization creates a condition where maliciously crafted vendorLength values can cause integer overflows, buffer overflows, or other memory corruption issues that result in application termination. The vulnerability operates at the intersection of improper input validation and memory management flaws, making it particularly dangerous in environments where TagLib is used to process untrusted audio metadata.
From an operational perspective, this vulnerability presents significant risks to media processing applications, digital audio workstations, content management systems, and any software that relies on TagLib for handling ogg file metadata. The impact extends beyond simple application crashes to potentially disrupt entire media processing pipelines, causing service degradation or complete system outages. Attackers can exploit this vulnerability by simply providing a crafted ogg file to any application that uses TagLib for file analysis, making it a particularly attractive target for denial of service attacks against media servers, streaming platforms, or content delivery networks. The remote nature of this attack vector means that systems can be compromised without requiring local access or user interaction, amplifying the potential impact across various networked environments.
Organizations utilizing TagLib in their applications should implement immediate mitigations including updating to TagLib version 1.8 or later where this vulnerability has been addressed through proper input validation and bounds checking mechanisms. Additionally, implementing proper file validation procedures before processing ogg files, including pre-scanning for suspicious vendorLength values and implementing strict parameter limits, can provide defensive measures against exploitation attempts. Network-level protections such as file filtering at ingress points and sandboxing of media processing components can further reduce the attack surface. This vulnerability aligns with CWE-129, which addresses improper validation of array indices and buffer overflows, and can be mapped to ATT&CK technique T1499.004 for denial of service attacks targeting application stability. The remediation strategy should include comprehensive testing of updated libraries, implementation of automated vulnerability scanning for media processing workflows, and establishment of secure coding practices for input validation that prevent similar issues in future development cycles.