Heap-buffer overflow via string parser
Published Aug 16, 2022 · Updated Aug 3, 2024
Out-of-bounds write in SWFMill 0.3.6 and earlier allows local users to crash the process via a crafted SWF file. SWF::Reader::getString() calls strlen on an unterminated string while parsing Symbol records, reading beyond the heap allocation created for the file. Exploitation requires a user or automated workflow to process the malicious SWF; the demonstrated consequence is process termination, with memory corruption impacts bounded by the parser context.
Summary
What happened
Out-of-bounds write in SWFMill 0.3.6 and earlier allows local users to crash the process via a crafted SWF file. SWF::Reader::getString() calls strlen on an unterminated string while parsing Symbol records, reading beyond the heap allocation created for the file. Exploitation requires a user or automated workflow to process the malicious SWF; the demonstrated consequence is process termination, with memory corruption impacts bounded by the parser context.
The record
- CVE
- CVE-2022-36143
- Published
- Aug 16, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 16, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- heap-buffer-overflow sample file for swf2xmlproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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