Service crash via unchecked AC-3 frame copy
Published Oct 11, 2023 · Updated Sep 18, 2024
An out-of-bounds read in GPAC before 2.2.2 allows attackers to crash MP4Box by processing a crafted AC-3 input. The ac3dmx_process function copies the declared AC-3 frame size from the input buffer without first verifying that the buffer has that many bytes remaining. The flaw is reached when MP4Box or another GPAC filter pipeline processes the malformed media, and the demonstrated consequence is a process abort that interrupts the service using it.
Summary
What happened
An out-of-bounds read in GPAC before 2.2.2 allows attackers to crash MP4Box by processing a crafted AC-3 input. The ac3dmx_process function copies the declared AC-3 frame size from the input buffer without first verifying that the buffer has that many bytes remaining. The flaw is reached when MP4Box or another GPAC filter pipeline processes the malformed media, and the demonstrated consequence is a process abort that interrupts the service using it.
The record
- CVE
- CVE-2023-5520
- Published
- Oct 11, 2023
- Updated
- Sep 18, 2024
- Vendor
- GPAC Project
- Product
- GPAC
- Classifications
- CWE-125, T1499.004
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 11, 2023CVE publishedPublication date reported by the CVE source.
- Sep 18, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <2.2.2
- Affected versionversion=unspecified <2.2.2
What conditions does exploitation require?
What is affected?
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.
Public exploit references
- MP4Box AC-3 heap over-read proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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