Local privilege escalation via mutable Parcel validation
Published Dec 4, 2023 · Updated Aug 2, 2024
Local privilege escalation in Google Android 13 and 14 allows local users to launch arbitrary activities with system privileges. AccountManagerService.checkKeyIntentParceledCorrectly validates a Bundle before an untyped getParcelable call can mutate its lazy Parcel data, letting a later process receive a different Intent. Exploitation requires local application execution but no user interaction, and the public proof of concept depends on a Samsung-specific Parcelable gadget rather than pure AOSP.
Summary
What happened
Local privilege escalation in Google Android 13 and 14 allows local users to launch arbitrary activities with system privileges. AccountManagerService.checkKeyIntentParceledCorrectly validates a Bundle before an untyped getParcelable call can mutate its lazy Parcel data, letting a later process receive a different Intent. Exploitation requires local application execution but no user interaction, and the public proof of concept depends on a Samsung-specific Parcelable gadget rather than pure AOSP.
The record
- CVE
- CVE-2023-45777
- Published
- Dec 4, 2023
- Updated
- Aug 2, 2024
- Vendor
- Product
- Android
- Classifications
- T1068
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Dec 4, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 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?
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- Affected versionversion=13
- Affected versionversion=14
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
- TheLastBundleMismatch proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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