Adjacent code execution via freed GATT buffer
Published Sep 11, 2023 · Updated Sep 26, 2024
Use-after-free in Android 11, 12, 12L, and 13 Bluetooth GATT allows remote attackers to execute code via a crafted prepare-write response. The gatt_process_prep_write_rsp function accesses a response-buffer header field after the buffer can be freed instead of preserving that state locally. Reachability requires Bluetooth proximity and a malicious GATT peer; no prior privileges or user interaction are required, and successful exploitation runs attacker-controlled code on the device.
Summary
What happened
Use-after-free in Android 11, 12, 12L, and 13 Bluetooth GATT allows remote attackers to execute code via a crafted prepare-write response. The gatt_process_prep_write_rsp function accesses a response-buffer header field after the buffer can be freed instead of preserving that state locally. Reachability requires Bluetooth proximity and a malicious GATT peer; no prior privileges or user interaction are required, and successful exploitation runs attacker-controlled code on the device.
The record
- CVE
- CVE-2023-35658
- Published
- Sep 11, 2023
- Updated
- Sep 26, 2024
- Vendor
- Product
- Android
- Classifications
- CWE-416, T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 11, 2023CVE publishedPublication date reported by the CVE source.
- Sep 26, 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=11
- Affected versionversion=12
- Affected versionversion=12l
- Affected versionversion=12L
- Affected versionversion=13
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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Public exploit references
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Technologies
Your stack
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Your stack
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