Google Android 8.0/8.1/9.0 Lock WificondControl.java tearDownClientInterface use after free

Summaryinfo

A vulnerability has been found in Google Android 8.0/8.1/9.0 and classified as critical. This issue affects the function tearDownClientInterface of the file WificondControl.java of the component Lock Handler. The manipulation leads to use after free. This vulnerability is documented as CVE-2019-2050. The attack needs to be performed locally. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Google Android 8.0/8.1/9.0 (Smartphone Operating System) and classified as critical. This issue affects the function tearDownClientInterface of the file WificondControl.java of the component Lock Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In tearDownClientInterface of WificondControl.java, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android-8.0 Android-8.1 Android-9 Android ID: A-121327323

The bug was discovered 05/06/2019. The weakness was released 05/08/2019 (Website). The advisory is shared at source.android.com. The identification of this vulnerability is CVE-2019-2050 since 12/10/2018. An attack has to be approached locally. A simple authentication is necessary for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/08/2020). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem.

Entries connected to this vulnerability are available at VDB-134453, VDB-134495, VDB-134496 and VDB-134497. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Smartphone Operating System

Vendor

• Google

Name

• Android

Version

• 8.0
• 8.1
• 9.0

License

• free

Website

• Vendor: https://www.google.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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