Yi Home Camera 27US 1.8.7.0D QR Code Scanner ssid_dst memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in Yi Home Camera 27US 1.8.7.0D. This affects an unknown function of the component QR Code Scanner. The manipulation of the argument ssid_dst leads to memory corruption. This vulnerability is documented as CVE-2018-3898. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Yi Home Camera 27US 1.8.7.0D. It has been rated as critical. This issue affects an unknown code of the component QR Code Scanner. The manipulation of the argument ssid_dst with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An exploitable code execution vulnerability exists in the QR code scanning functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted QR Code can cause a buffer overflow, resulting in code execution. The trans_info call can overwrite a buffer of size 0x104, which is more than enough to overflow the return address from the ssid_dst field.

The bug was discovered 10/31/2018. The weakness was released 11/02/2018 (Website). It is possible to read the advisory at talosintelligence.com. The identification of this vulnerability is CVE-2018-3898 since 01/02/2018. 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 vulnerability was handled as a non-public zero-day exploit for at least 2 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.

Entry connected to this vulnerability is available at VDB-126432. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Yi

Name

• Home Camera 27US

Version

• 1.8.7.0D

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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

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