Google Android prior 2016-07-05 on Nexus 5/Nexus 7 2013 vdec.c vid_dec_set_h264_mv_buffers memory corruption

Summaryinfo

A vulnerability classified as problematic has been found in Google Android on Nexus 5/Nexus 7 2013. This affects the function vid_dec_set_h264_mv_buffers of the file drivers/video/msm/vidc/common/dec/vdec.c. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2014-9778. The attack must be initiated from a local position. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Google Android on Nexus 5/Nexus 7 2013 (Smartphone Operating System). It has been classified as critical. This affects the function vid_dec_set_h264_mv_buffers of the file drivers/video/msm/vidc/common/dec/vdec.c. 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. The summary by CVE is:

The vid_dec_set_h264_mv_buffers function in drivers/video/msm/vidc/common/dec/vdec.c in the Qualcomm components in Android before 2016-07-05 on Nexus 5 and 7 (2013) devices does not validate the number of buffers, which allows attackers to gain privileges via a crafted application, aka Android internal bug 28598515 and Qualcomm internal bug CR563694.

The weakness was shared 07/06/2016 as Android Security Bulletin - July 2016 as confirmed security bulletin (Website). It is possible to read the advisory at source.android.com. This vulnerability is uniquely identified as CVE-2014-9778 since 05/31/2016. The exploitability is told to be easy. Attacking locally is a requirement. Required for exploitation is a authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/01/2022). It is expected to see the exploit prices for this product increasing in the near future.

Upgrading to version 2016-07-05 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 91628†). The entries VDB-88897, VDB-88898, VDB-88900 and VDB-88901 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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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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