CVE-2023-21215: Android Device Memory Server Arbitrary Code Execution Vulnerability
Summary
CVE-2023-21215: In DevmemIntAcquireRemoteCtx of devicemem_server.c, there is a possible arbitrary code execution due to a race condition. Affects :unknown: versions >= SoCVersion:0, < SoCVersion:2023-12-05. Fixed in SoCVersion:2023-12-05. How to fix ↓
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Background
The vulnerability affects the Android operating system, specifically within the device memory server component. This component is responsible for managing memory allocation and access for various applications and services running on the device. Given its critical role in system operations, any flaws can lead to severe security implications, including unauthorized access and privilege escalation.
Vulnerability Detail
In the function DevmemIntAcquireRemoteCtx of devicemem_server.c, a race condition exists that allows for arbitrary code execution. This vulnerability can be exploited locally, enabling an attacker to escalate privileges within the kernel without requiring additional execution rights. The exploitation does not necessitate user interaction, making it particularly dangerous.
How To Fix
Minimum fixed version
SoCVersion:2023-12-05
This is the first release that contains the fix.
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Workaround
Currently, there are no specific workarounds available for this vulnerability. The best course of action is to apply the patch as soon as it becomes available.
Conclusion
CVE-2023-21215 presents a serious risk to Android devices due to a race condition in the device memory server, allowing for arbitrary code execution and local privilege escalation. Users are strongly advised to update their systems to the latest patched version to mitigate this vulnerability.
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FAQ
CVE-2023-21215 is a vulnerability in the Android device memory server that allows for arbitrary code execution due to a race condition.
An attacker can exploit this vulnerability locally to escalate privileges in the kernel without needing additional execution rights.
No, user interaction is not required for exploitation, making it a significant security risk.
You should update your device to the patched version released on December 5, 2023, to protect against this vulnerability.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
References
Related vulnerabilities
Recent vulnerabilities recorded for :unknown:.
