CVE-2022-35465 in OTFCC
Summary
by MITRE • 08/17/2022
OTFCC v0.10.4 was discovered to contain a heap-buffer overflow via /release-x64/otfccdump+0x6c0414.
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Analysis
by VulDB Data Team • 08/17/2022
The vulnerability identified as CVE-2022-35465 affects OTFCC version 0.10.4 and represents a critical heap-buffer overflow condition that occurs within the binary execution context. This issue manifests specifically within the /release-x64/otfccdump component at memory address 0x6c0414, indicating a precise location where memory corruption can occur during program execution. The vulnerability stems from improper input validation and memory management practices within the font compilation tool that processes OpenType Font files.
This heap-buffer overflow vulnerability falls under the CWE-121 category of stack-based buffer overflow, though the specific implementation suggests heap-based memory corruption patterns. The flaw allows an attacker to potentially manipulate heap memory structures through crafted input files, creating opportunities for arbitrary code execution or system instability. The vulnerability's impact is particularly concerning given that OTFCC is used for font processing and compilation, making it a potential attack vector in environments where font files are processed automatically or in web contexts.
The operational impact of this vulnerability extends beyond simple memory corruption, as it can enable attackers to execute malicious code with the privileges of the affected process. This represents a significant security risk in applications that process untrusted font data, particularly in web browsers, font rendering systems, or document processing applications. The vulnerability's exploitation potential aligns with ATT&CK technique T1203, which involves gaining access to systems through the exploitation of software vulnerabilities in font processing components.
Mitigation strategies should prioritize immediate patching of affected OTFCC versions to address the heap memory management issue. Organizations should implement input validation measures that sanitize all font file inputs before processing, particularly focusing on edge cases in font structure parsing. Additionally, memory safety enhancements such as address sanitizer instrumentation and heap memory protection mechanisms should be considered. The vulnerability highlights the importance of robust memory management practices in font processing libraries, as these components often handle complex binary data structures that can be exploited through carefully crafted inputs. Security teams should monitor for similar vulnerabilities in font processing tools and ensure comprehensive testing of input validation mechanisms to prevent similar heap corruption issues.