CVE-2022-20539: Out of Bounds Write in parameterToHal Function in Effect.cpp in android.hardware.audio.effect@7.0-impl
Summary
CVE-2022-20539: In parameterToHal of Effect.cpp, there is a possible out of bounds write due to a missing bounds check. Affects platform/hardware/interfaces versions >= 13:0, < 13:2022-12-01. Fixed in 13:2022-12-01. How to fix ↓
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Background
The android.hardware.audio.effect@7.0-impl package is a component of the Android operating system that provides audio effect functionality. It is responsible for processing audio signals and applying various effects to enhance the audio experience. This package is utilized by the audio server in Android to handle audio effects. However, a vulnerability has been discovered in the parameterToHal function of the Effect.cpp file within this package.
Vulnerability Detail
The vulnerability in the parameterToHal function of Effect.cpp arises due to a missing bounds check. This flaw can be exploited to trigger an out of bounds write, potentially leading to a local escalation of privilege within the audio server. The attacker would require system execution privileges to exploit this vulnerability, and no user interaction is necessary for the exploitation to occur. The impact of this vulnerability could be significant, as it could allow an attacker to gain elevated privileges and potentially execute arbitrary code within the audio server.
How To Fix
Minimum fixed version
13:2022-12-01
This is the first release that contains the fix.
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Workaround
Currently, no known workarounds are available for this vulnerability. It is advised to apply the official fix as soon as possible.
Conclusion
The android.hardware.audio.effect@7.0-impl package is vulnerable to an out of bounds write in the parameterToHal function of Effect.cpp. This vulnerability can be exploited by an attacker with system execution privileges to escalate their privileges within the audio server. It is crucial to update the affected systems to the fixed version 13 of the package to mitigate the risk of exploitation.
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FAQ
The android.hardware.audio.effect@7.0-impl package is a component of the Android operating system that provides audio effect functionality. It is responsible for processing audio signals and applying various effects to enhance the audio experience.
The vulnerability allows for an out of bounds write, which can lead to a local escalation of privilege within the audio server. An attacker with system execution privileges could potentially exploit this vulnerability to execute arbitrary code within the audio server.
No, user interaction is not needed for exploitation. The vulnerability can be exploited without any user involvement.
Currently, no known workarounds are available for this vulnerability. It is recommended to apply the official fix provided by the Android source repository.
The fix for this vulnerability can be obtained by updating the android.hardware.audio.effect@7.0-impl package to version 13. The fix is available in the official Android source repository.
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