Memory corruption via unchecked subtitle timing copy
Published Jan 5, 2023 · Updated Apr 10, 2025
Buffer overflow in GPAC MP4Box 2.1-DEV-rev574-g9d5bb184b allows local users to corrupt memory by importing a crafted AVI file. The gf_text_process_sub function copies characters from a subtitle timing field into the fixed 20-byte szTime array without checking the destination index. Successful exploitation requires a user to process the file; the demonstrated consequence is an out-of-bounds write and crash, not code execution.
Summary
What happened
Buffer overflow in GPAC MP4Box 2.1-DEV-rev574-g9d5bb184b allows local users to corrupt memory by importing a crafted AVI file. The gf_text_process_sub function copies characters from a subtitle timing field into the fixed 20-byte szTime array without checking the destination index. Successful exploitation requires a user to process the file; the demonstrated consequence is an out-of-bounds write and crash, not code execution.
The record
- CVE
- CVE-2022-47091
- Published
- Jan 5, 2023
- Updated
- Apr 10, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 5, 2023CVE publishedPublication date reported by the CVE source.
- Apr 10, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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
- poc_bof5.zip MP4Box reproduction fileproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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