Vulnerability Information
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Vulnerability Title
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Vulnerability Description
An issue was discovered on Securifi Almond, Almond+, and Almond 2015 devices with firmware AL-R096. The device provides a user with the capability of adding new routes to the device. It seems that the POST parameters passed in this request to set up routes on the device can be set in such a way that would result in overflowing the stack set up and allow an attacker to control the $ra register stored on the stack. If the firmware version AL-R096 is dissected using binwalk tool, we obtain a cpio-root archive which contains the filesystem set up on the device that contains all the binaries. The binary "goahead" is the one that has the vulnerable function that recieves the values sent by the POST request. If we open this binary in IDA-pro we will notice that this follows a MIPS little endian format. The function sub_00420F38 in IDA pro is identified to be receiving the values sent in the POST request. The POST parameter "gateway" allows to overflow the stack and control the $ra register after 1546 characters. The value from this post parameter is then copied on the stack at address 0x00421348 as shown below. This allows an attacker to provide the payload of his/her choice and finally take control of the device.
CVSS Information
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Vulnerability Type
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Vulnerability Title
Securifi Almond 缓冲区错误漏洞
Vulnerability Description
Securifi Almond是一款带有触控屏幕的无线路由器。 使用AL-R096版本固件的Securifi Almond、Almond+和Almond 2015中的Add Routing功能存在缓冲区错误漏洞。攻击者可利用该漏洞提交恶意的payload并控制设备。
CVSS Information
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Vulnerability Type
N/A