Process crash via stale child-box pointers
Published Apr 21, 2021 · Updated Aug 4, 2024
Use-after-free in GPAC 0.8.0 and 1.0.1 allows local users to crash MP4Box by processing a crafted ISOBMFF file. When interleaved output fails, CleanWriters frees stco and stsc boxes without first removing their pointers from the sample table's child_boxes list, so gf_isom_box_del later reads freed memory during recursive teardown. The issue requires a user to process the supplied file with MP4Box's hint operation; the demonstrated result is a segmentation fault or AddressSanitizer abort.
Summary
What happened
Use-after-free in GPAC 0.8.0 and 1.0.1 allows local users to crash MP4Box by processing a crafted ISOBMFF file. When interleaved output fails, CleanWriters frees stco and stsc boxes without first removing their pointers from the sample table's child_boxes list, so gf_isom_box_del later reads freed memory during recursive teardown. The issue requires a user to process the supplied file with MP4Box's hint operation; the demonstrated result is a segmentation fault or AddressSanitizer abort.
The record
- CVE
- CVE-2020-35980
- Published
- Apr 21, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-416
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 21, 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 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
- gf_isom_box_del-UAF proof-of-concept fileproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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