Buffer overflow via out-of-range WAV integer shift
Published Jun 25, 2021 · Updated Aug 4, 2024
Buffer overflow in Mackron miniaudio 0.10.35 allows context-dependent attackers to trigger undefined behavior with crafted WAV input. The drwav_bytes_to_u32 function in miniaudio.h promotes input bytes to signed int and shifts the fourth byte 24 bits without first converting it to an unsigned 32-bit value. Exploitation requires an application to parse attacker-controlled WAV data; public evidence demonstrates a sanitizer-detected runtime error, not code execution.
Summary
What happened
Buffer overflow in Mackron miniaudio 0.10.35 allows context-dependent attackers to trigger undefined behavior with crafted WAV input. The drwav_bytes_to_u32 function in miniaudio.h promotes input bytes to signed int and shifts the fourth byte 24 bits without first converting it to an unsigned 32-bit value. Exploitation requires an application to parse attacker-controlled WAV data; public evidence demonstrates a sanitizer-detected runtime error, not code execution.
The record
- CVE
- CVE-2021-34185
- Published
- Jun 25, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 25, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- POC2 sanitizer reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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