Xiaomi perseus-p-oss MIX 3 up to 2018-11-26 ft5x46 Touchscreen Driver ft5x46_ts.c size integer overflow

Summaryinfo

A vulnerability was found in Xiaomi perseus-p-oss MIX 3 up to 2018-11-26. It has been rated as problematic. The affected element is an unknown function of the file drivers/input/touchscreen/ft5x46/ft5x46_ts.c of the component ft5x46 Touchscreen Driver. The manipulation of the argument size as part of Crafted Application leads to integer overflow. This vulnerability is traded as CVE-2018-20787. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Xiaomi perseus-p-oss MIX 3 up to 2018-11-26. This issue affects an unknown function of the file drivers/input/touchscreen/ft5x46/ft5x46_ts.c of the component ft5x46 Touchscreen Driver. The manipulation of the argument size as part of a Crafted Application leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is availability. The summary by CVE is:

The ft5x46 touchscreen driver for custom Linux kernels on the Xiaomi perseus-p-oss MIX 3 device through 2018-11-26 has an integer overflow and OOPS because of missing checks of the size argument in tpdbg_write in drivers/input/touchscreen/ft5x46/ft5x46_ts.c. This is exploitable for a device crash via a syscall by a crafted application on a rooted device.

The bug was discovered 12/19/2018. The weakness was shared 02/25/2019. The identification of this vulnerability is CVE-2018-20787 since 02/24/2019. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 $0-$5k at the moment (estimation calculated on 07/19/2023).

The vulnerability was handled as a non-public zero-day exploit for at least 68 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.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Xiaomi

Name

• perseus-p-oss MIX 3

Version

• 2018-11-26

License

• open-source

CPE 2.3info

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CPE 2.2info

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