Out-of-bounds read via unclamped final block height
Published Nov 13, 2022 · Updated Aug 3, 2024
Out-of-bounds read in FFmpeg's QuickTime RPZA encoder allows remote attackers to crash an application via crafted video input. The final-block loops in libavcodec/rpzaenc.c always process four rows without clamping the count to the frame's remaining height. A user or application must encode attacker-controlled video with a height not divisible by four; the resulting read accesses adjacent process memory and terminates the process when it faults.
Summary
What happened
Out-of-bounds read in FFmpeg's QuickTime RPZA encoder allows remote attackers to crash an application via crafted video input. The final-block loops in libavcodec/rpzaenc.c always process four rows without clamping the count to the frame's remaining height. A user or application must encode attacker-controlled video with a height not divisible by four; the resulting read accesses adjacent process memory and terminates the process when it faults.
The record
- CVE
- CVE-2022-3964
- Published
- Nov 13, 2022
- Updated
- Aug 3, 2024
- Vendor
- FFmpeg
- Product
- FFmpeg
- Classifications
- CWE-119
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 13, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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- Affected versionversion=n/a
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Published CVSS scores
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Attacks
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Technologies
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