Cross-site data disclosure via redirect process reuse
Published Jun 19, 2023 · Updated Feb 13, 2025
Site-isolation bypass in Mozilla Firefox before 114 allows remote attackers to expose cross-site data through a redirected data: URL. The DOM content-process selector assigns a redirect-created data: document to the redirecting site's process instead of isolating it separately. Exploitation requires user interaction, a site that permits open redirects, and a Spectre-like in-process attack; the bounded consequence is cross-site data disclosure.
Summary
What happened
Site-isolation bypass in Mozilla Firefox before 114 allows remote attackers to expose cross-site data through a redirected data: URL. The DOM content-process selector assigns a redirect-created data: document to the redirecting site's process instead of isolating it separately. Exploitation requires user interaction, a site that permits open redirects, and a Spectre-like in-process attack; the bounded consequence is cross-site data disclosure.
The record
- CVE
- CVE-2023-34415
- Published
- Jun 19, 2023
- Updated
- Feb 13, 2025
- Vendor
- Mozilla
- Product
- Firefox
- Classifications
- CWE-601, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 19, 2023CVE publishedPublication date reported by the CVE source.
- Feb 13, 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 <114
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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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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