Local URL disclosure via sharevia deeplink caller check
Published Dec 8, 2021 · Updated Aug 3, 2024
Samsung Internet before 16.0.2 allows untrusted local applications to read the current tab URL through the sharevia deeplink. The deeplink performs an insecure caller check, allowing an installed application without the intended authorization to invoke the sharing path and obtain browser URL data. Exploitation requires a malicious application on the same device; the documented impact is confidentiality loss of the active tab address without integrity or availability effects.
Summary
What happened
Samsung Internet before 16.0.2 allows untrusted local applications to read the current tab URL through the sharevia deeplink. The deeplink performs an insecure caller check, allowing an installed application without the intended authorization to invoke the sharing path and obtain browser URL data. Exploitation requires a malicious application on the same device; the documented impact is confidentiality loss of the active tab address without integrity or availability effects.
The record
- CVE
- CVE-2021-25521
- Published
- Dec 8, 2021
- Updated
- Aug 3, 2024
- Vendor
- Samsung Electronics
- Product
- Samsung Internet
- Classifications
- CWE-552, CWE-285
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 8, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record 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=- <16.0.2
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
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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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