Global-buffer-overflow in libxaac: iusace_quantize_lines
Summary
OSV-2023-1012: Global-buffer-overflow in iusace_quantize_lines. Affects libxaac versions >= 1a62ab2e920382e878f6d11a26c0bcefbb7710f7, < e8d026548e88221580cbaeb7a8906bced0295402. Fixed in e8d026548e88221580cbaeb7a8906bced0295402. How to fix ↓
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Background
libxaac is an open-source library that provides encoding and decoding functionality for Advanced Audio Coding (AAC) audio files. It is widely used in various applications and platforms for audio processing. However, a vulnerability has been discovered in the library, specifically in the function iusace_quantize_lines, which can lead to a global buffer overflow.
Vulnerability Detail
The vulnerability in libxaac arises due to a global buffer overflow in the iusace_quantize_lines function. This can be triggered when processing certain input data, causing a read of 4 bytes beyond the bounds of the buffer. An attacker could potentially exploit this vulnerability to execute arbitrary code, crash the application, or disclose sensitive information.
How To Fix
Minimum fixed version
e8d026548e88221580cbaeb7a8906bced0295402
This is the first release that contains the fix.
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Workaround
As a temporary workaround, developers can implement input validation and boundary checks in their applications to prevent triggering the buffer overflow. Here is an example of how to perform input validation in C:
void process_input_data(const char* data, size_t length) {
if (length > MAX_BUFFER_SIZE) {
// Handle error or reject input
return;
}
// Process the input data
}
Conclusion
In conclusion, libxaac is vulnerable to a global buffer overflow in the iusace_quantize_lines function. This can be exploited by an attacker to execute arbitrary code, crash the application, or disclose sensitive information. It is crucial for developers to update their dependencies and rebuild affected applications with the fixed version of libxaac. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
libxaac is an open-source library that provides encoding and decoding functionality for Advanced Audio Coding (AAC) audio files. It is widely used in various applications and platforms for audio processing.
A global buffer overflow occurs when a program writes data beyond the bounds of a buffer, potentially overwriting adjacent memory. This can lead to crashes, code execution, or disclosure of sensitive information.
An attacker can exploit this vulnerability by providing specially crafted input data that triggers the buffer overflow. This can allow them to execute arbitrary code, crash the application, or potentially access sensitive information.
Yes, the vulnerability has been fixed in the libxaac library. Developers should update to a version that includes the fix to ensure their applications are not vulnerable.
As a temporary workaround, developers can implement input validation and boundary checks in their applications to prevent triggering the buffer overflow. However, updating to a fixed version of libxaac is the recommended solution.
References
Related vulnerabilities
Recent vulnerabilities recorded for libxaac.
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