Heap-data disclosure via undersized DPX tile buffer
Published Dec 23, 2022 · Updated Apr 14, 2025
Out-of-bounds read in OpenImageIO 2.4.4.2 allows attackers to disclose heap data through a crafted tiled DPX output operation. DPXOutput::open sizes m_tilebuffer from a two-byte HALF subimage specification, but close-time scanline conversion uses the four-byte FLOAT copy, reading past the allocation. Triggering requires control of an ImageOutput specification that requests tiled DPX output with a converted pixel type; leaked process-memory bytes are embedded in the output image.
Summary
What happened
Out-of-bounds read in OpenImageIO 2.4.4.2 allows attackers to disclose heap data through a crafted tiled DPX output operation. DPXOutput::open sizes m_tilebuffer from a two-byte HALF subimage specification, but close-time scanline conversion uses the four-byte FLOAT copy, reading past the allocation. Triggering requires control of an ImageOutput specification that requests tiled DPX output with a converted pixel type; leaked process-memory bytes are embedded in the output image.
The record
- CVE
- CVE-2022-43592
- Published
- Dec 23, 2022
- Updated
- Apr 14, 2025
- Vendor
- Academy Software Foundation
- Product
- OpenImageIO
- Classifications
- CWE-125, T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 23, 2022CVE publishedPublication date reported by the CVE source.
- Apr 14, 2025Record 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=v2.4.4.2
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Cisco Talos DPX heap-disclosure demonstrationproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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