Memory disclosure via incorrect JIT aliasing
Published Dec 22, 2022 · Updated Apr 16, 2025
Out-of-bounds read in Mozilla Firefox before 99, Firefox ESR before 91.8, and Thunderbird before 91.8 allows remote attackers to read memory. MLoadTypedArrayElementHole declares only an UnboxedElement load while generated code also reads the array-buffer view length, offset, and object data-offset fields. Exploitation requires user interaction and another vulnerability; the defect is not actionable alone and provides a stepping stone for arbitrary memory reads.
Summary
What happened
Out-of-bounds read in Mozilla Firefox before 99, Firefox ESR before 91.8, and Thunderbird before 91.8 allows remote attackers to read memory. MLoadTypedArrayElementHole declares only an UnboxedElement load while generated code also reads the array-buffer view length, offset, and object data-offset fields. Exploitation requires user interaction and another vulnerability; the defect is not actionable alone and provides a stepping stone for arbitrary memory reads.
The record
- CVE
- CVE-2022-28285
- Published
- Dec 22, 2022
- Updated
- Apr 16, 2025
- Vendor
- Mozilla
- Product
- Firefox
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 22, 2022CVE publishedPublication date reported by the CVE source.
- Apr 16, 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?
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- Affected versionversion=unspecified <99
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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