Local privilege escalation via plugin lifetime race
Published Jun 15, 2023 · Updated Dec 18, 2024
Use-after-free in WVDrmPlugin.cpp in Google Widevine DRM for Android SoC allows local users to elevate privileges without interaction. Multiple plugin functions access a freed object when concurrent operations race without adequate synchronization. Exploitation requires low-privileged local access and successful race timing, and can compromise confidentiality, integrity, and availability.
Summary
What happened
Use-after-free in WVDrmPlugin.cpp in Google Widevine DRM for Android SoC allows local users to elevate privileges without interaction. Multiple plugin functions access a freed object when concurrent operations race without adequate synchronization. Exploitation requires low-privileged local access and successful race timing, and can compromise confidentiality, integrity, and availability.
The record
- CVE
- CVE-2023-21101
- Published
- Jun 15, 2023
- Updated
- Dec 18, 2024
- Vendor
- Product
- Widevine DRM
- Classifications
- CWE-362, CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 15, 2023CVE publishedPublication date reported by the CVE source.
- Dec 18, 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 SoC
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
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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