Xiaomi MIX 2 4.4.78 /dev/elliptic1 null pointer dereference

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CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in Xiaomi MIX 2 4.4.78. Affected by this issue is an unknown part of the file /dev/elliptic1. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-476. Impacted is availability. CVE summarizes:

On Xiaomi MIX 2 devices with the 4.4.78 kernel, a NULL pointer dereference in the ioctl interface of the device file /dev/elliptic1 or /dev/elliptic0 causes a system crash via IOCTL 0x4008c575 (aka decimal 1074316661).

The bug was discovered 01/07/2019. The weakness was disclosed 02/17/2019. This vulnerability is handled as CVE-2019-8413 since 02/17/2019. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 41 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
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Exploitinginfoedit

Class: Denial of service
CWE: CWE-476
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Recommended: no mitigation known
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Timelineinfoedit

01/07/2019 🔍
02/17/2019 +41 days 🔍
02/17/2019 +0 days 🔍
02/18/2019 +1 days 🔍
05/11/2020 +448 days 🔍

Sourcesinfoedit

Status: Not defined

CVE: CVE-2019-8413 (🔍)

Entryinfoedit

Created: 02/18/2019 09:37 AM
Updated: 05/11/2020 06:48 AM
Changes: (1) vulnerability_discoverydate
Complete: 🔍

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