CVE-2022-35458 in OTFCC
Summary
by MITRE • 08/17/2022
OTFCC v0.10.4 was discovered to contain a heap-buffer overflow via /release-x64/otfccdump+0x6b05ce.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 08/17/2022
The vulnerability identified as CVE-2022-35458 affects OTFCC version 0.10.4 and represents a heap-buffer overflow condition that occurs within the binary execution context. This issue manifests specifically at the address /release-x64/otfccdump+0x6b05ce, indicating a memory corruption flaw in the software's handling of buffer operations. The vulnerability stems from insufficient bounds checking during memory allocation and data processing activities within the application's codebase. Such heap-buffer overflows typically arise when programs write data beyond the allocated memory boundaries of heap-allocated buffers, potentially leading to unpredictable behavior and system instability.
The technical exploitation of this vulnerability involves the manipulation of input data that flows through the otfccdump utility, which is designed for processing OpenType Font files. When processing malformed or specially crafted font data, the application fails to properly validate buffer sizes and memory boundaries, allowing attackers to overwrite adjacent memory locations. This flaw falls under the common weakness enumeration CWE-121, which categorizes heap-based buffer overflow conditions. The vulnerability's impact extends beyond simple memory corruption as it can potentially enable arbitrary code execution or denial of service scenarios, depending on how the overflow affects memory layout and program execution flow.
From an operational standpoint, this vulnerability poses significant risks to systems that process font files using OTFCC v0.10.4, particularly in environments where untrusted font data is processed. The heap-buffer overflow can be triggered through various attack vectors including email attachments, web content, or file sharing scenarios where font files are automatically processed. The vulnerability's location within the otfccdump utility suggests that it may be exploited in contexts involving font rendering or conversion operations, making it particularly concerning for web browsers, desktop applications, and font processing services. Attackers could potentially leverage this flaw to execute malicious code with the privileges of the affected application, creating a potential pathway for system compromise.
Mitigation strategies for CVE-2022-35458 should prioritize immediate software updates to versions that address the heap-buffer overflow condition. Organizations should implement input validation measures that enforce strict bounds checking on all font data processing operations, particularly focusing on memory allocation and buffer handling routines. The implementation of address space layout randomization and stack canaries can provide additional defense-in-depth measures against exploitation attempts. System administrators should also consider restricting access to font processing utilities and implementing sandboxing techniques to limit potential impact should exploitation occur. Regular security assessments and code reviews focusing on memory management practices should be conducted to identify similar vulnerabilities within the software ecosystem. The vulnerability's classification under ATT&CK technique T1059.007, which covers application execution through command-line interfaces, suggests that monitoring and logging of otfccdump usage should be implemented as part of broader security monitoring initiatives to detect potential exploitation attempts.