Summaryinfo

A vulnerability was found in Google Android. It has been classified as critical. The affected element is an unknown function of the component TrustZone. Performing a manipulation results in double free. This vulnerability is cataloged as CVE-2015-9007. The attack must be initiated from a local position. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Google Android (Smartphone Operating System) (unknown version). This affects an unknown code block of the component TrustZone. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In TrustZone in all Android releases from CAF using the Linux kernel, a Double Free vulnerability could potentially exist.

The bug was discovered 05/01/2017. The weakness was shared 06/06/2017 (Website). The advisory is shared at source.android.com. This vulnerability is uniquely identified as CVE-2015-9007 since 03/28/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/14/2019). 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 36 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 98324†). The entries VDB-100815, VDB-101104, VDB-101105 and VDB-101106 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Smartphone Operating System

Vendor

• Google

Name

• Android

License

• free

Website

• Vendor: https://www.google.com/

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