2021-0640 | Google Android StatsdStats.cpp noteAtomLogged out-of-bounds write (A-187957589)

By Max On Aug 20, 2021

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5.1	$5k-$25k	0.63

A vulnerability, which was classified as critical, has been found in Google Android 9.0/10.0/11.0 (Smartphone Operating System). Affected by this issue is the function noteAtomLogged of the file StatsdStats.cpp. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-787. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In noteAtomLogged of StatsdStats.cpp, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-9Android ID: A-187957589

The weakness was shared 08/18/2021 as A-187957589. The advisory is shared for download at source.android.com. This vulnerability is handled as CVE-2021-0640 since 11/06/2020. The exploitation is known to be easy. The attack needs to be approached locally. A simple authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/20/2021). It is expected to see the exploit prices for this product increasing in the near future.

Applying a patch is able to eliminate this problem.

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