CVE-2020-21722 in oggvideotools
Summary
by MITRE • 08/22/2023
Buffer Overflow vulnerability in oggvideotools 0.9.1 allows remote attackers to run arbitrary code via opening of crafted ogg file.
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Analysis
by VulDB Data Team • 09/16/2023
The buffer overflow vulnerability identified as CVE-2020-21722 resides within the oggvideotools 0.9.1 software package, specifically affecting the handling of ogg video files. This vulnerability represents a critical security flaw that enables remote attackers to execute arbitrary code on systems processing maliciously crafted ogg files. The vulnerability stems from insufficient input validation and inadequate bounds checking during the parsing of ogg file structures, creating an exploitable condition that can be leveraged by attackers to gain unauthorized system access. The flaw exists in the software's media processing pipeline where it fails to properly validate the size and structure of incoming ogg file data before attempting to process it in memory.
This vulnerability manifests as a classic buffer overflow condition that occurs when the software attempts to write data beyond the allocated memory buffer boundaries. The attack vector involves a remote attacker who can craft a malicious ogg file containing oversized or malformed data structures that trigger the overflow when the software attempts to parse the file. The technical implementation of this flaw involves the software's failure to perform proper size validation on ogg packet headers and data segments, allowing attackers to manipulate memory layout and potentially overwrite critical program structures including return addresses or function pointers. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, representing a well-known and dangerous class of memory safety issues that have been extensively documented in cybersecurity literature and exploited in numerous real-world attacks.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with a potential foothold for further system compromise and lateral movement within network environments. When exploited successfully, the buffer overflow can lead to complete system compromise, allowing attackers to execute arbitrary commands with the privileges of the affected application process. This creates significant risk for systems that process user-uploaded ogg files or automatically download and process media content, particularly in web applications, media servers, or content management systems that utilize oggvideotools for video processing. The vulnerability's remote exploitability means that attackers do not require physical access to the target system, making it particularly dangerous in networked environments where media processing occurs automatically without user intervention.
Organizations utilizing oggvideotools 0.9.1 should immediately implement mitigations including upgrading to patched versions of the software, implementing strict input validation for all media file processing, and deploying network segmentation controls to limit exposure. The ATT&CK framework categorizes this vulnerability under T1059.007 for command and script interpreter execution, while the broader exploitation pattern aligns with T1203 for Exploitation for Client Execution. Security teams should also consider implementing file type validation, size limiting for incoming media files, and regular security scanning of media processing components to detect potential exploitation attempts. Additionally, application-level sandboxing or containerization of media processing functions can provide defense-in-depth protection against successful exploitation attempts, as outlined in the NIST Cybersecurity Framework's protective measures for software security.