Local privilege escalation via pda race condition
Published Sep 4, 2023 · Updated Oct 21, 2024
Use-after-free in MediaTek MT8781 pda on Android 12.0 and 13.0 allows local users with System privileges to escalate privileges. A race condition in pda permits an object to be freed while another execution path can still use it. Exploitation requires local high-privilege access, needs no user interaction, and can obtain execution at a higher privilege level.
Summary
What happened
Use-after-free in MediaTek MT8781 pda on Android 12.0 and 13.0 allows local users with System privileges to escalate privileges. A race condition in pda permits an object to be freed while another execution path can still use it. Exploitation requires local high-privilege access, needs no user interaction, and can obtain execution at a higher privilege level.
The record
- CVE
- CVE-2023-20834
- Published
- Sep 4, 2023
- Updated
- Oct 21, 2024
- Vendor
- MediaTek
- Product
- MT8781
- Classifications
- CWE-362, CWE-416, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Sep 4, 2023CVE publishedPublication date reported by the CVE source.
- Oct 21, 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=Android 12.0
- Affected versionversion=Android 13.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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