Heap buffer overflow via ssix subsegment count
Published Aug 25, 2021 · Updated Aug 3, 2024
Integer overflow in GPAC Project Advanced Content 1.0.1 allows remote attackers to cause memory corruption via crafted MPEG-4 input. The ssix atom parser trusts a 32-bit subsegment count, multiplies it by the structure size without overflow protection, allocates an undersized array, and then writes entries past its bounds. Exploitation requires convincing a user to open the malicious video; the resulting corruption can execute code in the GPAC process context.
Summary
What happened
Integer overflow in GPAC Project Advanced Content 1.0.1 allows remote attackers to cause memory corruption via crafted MPEG-4 input. The ssix atom parser trusts a 32-bit subsegment count, multiplies it by the structure size without overflow protection, allocates an undersized array, and then writes entries past its bounds. Exploitation requires convincing a user to open the malicious video; the resulting corruption can execute code in the GPAC process context.
The record
- CVE
- CVE-2021-21842
- Published
- Aug 25, 2021
- Updated
- Aug 3, 2024
- Vendor
- GPAC Project
- Product
- GPAC
- Classifications
- CWE-680, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 25, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 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=GPAC Project Advanced Content commit a8a8d412dabcb129e695c3e7d861fcc81f608304, GPAC Project Advanced Content v1.0.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- TALOS-2021-1297 ssix proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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