CVE-2022-35484 in OTFCC
Summary
by MITRE • 08/17/2022
OTFCC v0.10.4 was discovered to contain a segmentation violation via /release-x64/otfccdump+0x6b6a8f.
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Analysis
by VulDB Data Team • 09/17/2022
The vulnerability identified as CVE-2022-35484 affects OTFCC version 0.10.4 and represents a critical segmentation fault condition that occurs during the execution of the otfccdump utility. This flaw manifests within the release-x64 binary at the memory address +0x6b6a8f, indicating a memory access violation that can lead to application crashes or potentially more severe consequences depending on the execution context. The issue stems from improper memory handling or buffer overflow conditions that cause the program to attempt accessing invalid memory locations during normal operation.
This segmentation violation vulnerability falls under the broader category of memory safety issues that are commonly classified as CWE-125 Out-of-bounds Read or CWE-787 Out-of-bounds Write depending on the specific memory access pattern. The flaw demonstrates characteristics consistent with improper input validation where the otfccdump utility fails to properly validate or sanitize input data before processing it, leading to memory corruption. The vulnerability is particularly concerning as it occurs in a utility designed for font compilation and manipulation, which suggests that malicious input could potentially trigger the segmentation fault during font processing operations.
The operational impact of this vulnerability extends beyond simple application crashes as it can be exploited to cause denial of service conditions or potentially enable more sophisticated attacks. When a segmentation fault occurs, it typically results in the application terminating unexpectedly, which can disrupt legitimate user workflows and create opportunities for attackers to exploit the instability for further malicious activities. In environments where OTFCC is used for automated font processing or as part of larger workflows, such a vulnerability could lead to significant operational disruptions and system availability issues.
From an attack perspective, this vulnerability aligns with ATT&CK technique T1499.004 for network denial of service and potentially T1059.001 for command execution if the segmentation fault can be leveraged to gain additional system access. The memory corruption aspect of this vulnerability could theoretically be exploited to achieve arbitrary code execution depending on the memory layout and the specific conditions under which the fault occurs. Organizations should consider this vulnerability as part of their broader threat landscape assessment, particularly in environments where font processing is automated or where the utility is exposed to untrusted input sources.
Mitigation strategies for CVE-2022-35484 should include immediate patching of OTFCC to version 0.10.5 or later where the segmentation fault has been addressed through proper memory validation and bounds checking. System administrators should also implement input validation measures to prevent potentially malicious font files from being processed by the utility, including file format verification and size limitations. Additionally, monitoring should be implemented to detect unusual application behavior or crash patterns that could indicate exploitation attempts. The vulnerability highlights the importance of regular security updates and proper memory safety practices in software development, particularly for utilities that process untrusted data inputs such as font files. Organizations should also consider implementing sandboxing or containerization approaches to limit the potential impact of such vulnerabilities in production environments.