Process crash via unbounded MP4 array allocation
Published Jun 27, 2022 · Updated Aug 4, 2024
Resource exhaustion in Bento4 1.6.0-638 allows context-dependent attackers to terminate mp4dump with a crafted MP4 file. AP4_TrunAtom reads an attacker-controlled entry count and passes it to AP4_Array::SetItemCount, whose EnsureCapacity path attempts an approximately 32 GiB allocation without a limiting check. The file must be processed by mp4dump or another consumer that reaches this parser path; the demonstrated consequence is termination of the parsing process from memory exhaustion.
Summary
What happened
Resource exhaustion in Bento4 1.6.0-638 allows context-dependent attackers to terminate mp4dump with a crafted MP4 file. AP4_TrunAtom reads an attacker-controlled entry count and passes it to AP4_Array::SetItemCount, whose EnsureCapacity path attempts an approximately 32 GiB allocation without a limiting check. The file must be processed by mp4dump or another consumer that reaches this parser path; the demonstrated consequence is termination of the parsing process from memory exhaustion.
The record
- CVE
- CVE-2021-40941
- Published
- Jun 27, 2022
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-770, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 27, 2022CVE 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
- poc1.zipproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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