Sandbox bypass via insecure IPC handle passing
Published Dec 22, 2022 · Updated Apr 16, 2025
Sandbox bypass in Mozilla Firefox before 96 allows remote attackers to access privileged process handles via crafted browser content. Firefox IPC broadly accepts and passes Windows HANDLEs and macOS Mach ports without validating that the receiving privileged process should access them, allowing a compromised content process to confuse higher-privileged processes. Exploitation requires a compromised content process, typically after user interaction with attacker-controlled web content; reported impact is unauthorized handle access and sandbox escape, with no integrity or availability impact described.
Summary
What happened
Sandbox bypass in Mozilla Firefox before 96 allows remote attackers to access privileged process handles via crafted browser content. Firefox IPC broadly accepts and passes Windows HANDLEs and macOS Mach ports without validating that the receiving privileged process should access them, allowing a compromised content process to confuse higher-privileged processes. Exploitation requires a compromised content process, typically after user interaction with attacker-controlled web content; reported impact is unauthorized handle access and sandbox escape, with no integrity or availability impact described.
The record
- CVE
- CVE-2022-22750
- Published
- Dec 22, 2022
- Updated
- Apr 16, 2025
- Vendor
- Mozilla
- Product
- Firefox
- Classifications
- T1611
- 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 <96
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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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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