Google Android on Qualcomm TZ App input validation

Summaryinfo

A vulnerability described as critical has been identified in Google Android on Qualcomm. This affects an unknown part of the component TZ App Handler. Such manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2016-10431. The attack can be launched remotely. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Google Android on Qualcomm (Smartphone Operating System) (unknown version) and classified as very critical. Affected by this issue is an unknown code block of the component TZ App Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Automobile, Snapdragon Mobile, and Snapdragon Wear MDM9206, MDM9650, SD 210/SD 212/SD 205, SD 425, SD 430, SD 450, SD 625, SD 650/52, SD 820, SD 820A, SD 835, SD 845, and SD 850, TZ applications are not properly validated.

The bug was discovered 04/05/2018. The weakness was disclosed 04/18/2018 (Website). The advisory is shared for download at source.android.com. This vulnerability is handled as CVE-2016-10431 since 08/16/2017. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 01/27/2020). 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 13 days. During that time the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 103671†). The entries VDB-83180, VDB-105483, VDB-105484 and VDB-105488 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Smartphone Operating System

Vendor

• Google

Name

• Android

License

• free

Website

• Vendor: https://www.google.com/

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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