Google Android Linux Kernel memory corruption

Summaryinfo

A vulnerability categorized as critical has been discovered in Google Android. Impacted is an unknown function of the component Linux Kernel. The manipulation results in memory corruption. This vulnerability is known as CVE-2018-13893. Attacking locally is a requirement. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Google Android (Smartphone Operating System) (affected version unknown). It has been classified as critical. Affected is an unknown functionality of the component Linux Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Out of bound mask range access caused by using possible old value of msg mask table count while copying masks to userspace.

The bug was discovered 01/07/2019. The weakness was published 02/11/2019 (Website). The advisory is shared for download at codeaurora.org. This vulnerability is traded as CVE-2018-13893 since 07/11/2018. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/09/2020). 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 35 days. During that time the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem.

Similar entries are available at VDB-130433, VDB-130434, VDB-130435 and VDB-130735. 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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Once again VulDB remains the best source for vulnerability data.

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