Memory read and write via resized async buffers
Published Mar 23, 2023 · Updated Feb 20, 2025
Out-of-bounds access in asynchronous native functions in Deno 1.32.0 allows remote authenticated users to read or write memory. The functions can retain stale buffer bounds while an asynchronous operation proceeds, then access a resizable ArrayBuffer after its backing store is shrunk. Exploitation requires code that supplies and resizes the buffer during the pending operation; Deno Deploy is unaffected.
Summary
What happened
Out-of-bounds access in asynchronous native functions in Deno 1.32.0 allows remote authenticated users to read or write memory. The functions can retain stale buffer bounds while an asynchronous operation proceeds, then access a resizable ArrayBuffer after its backing store is shrunk. Exploitation requires code that supplies and resizes the buffer during the pending operation; Deno Deploy is unaffected.
The record
- CVE
- CVE-2023-28445
- Published
- Mar 23, 2023
- Updated
- Feb 20, 2025
- Vendor
- Deno Land Inc.
- Product
- Deno
- Classifications
- CWE-787, CWE-125
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 23, 2023CVE publishedPublication date reported by the CVE source.
- Feb 20, 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== 1.32.0
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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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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