Vera VeraEdge和Veralite代码执行漏洞

CVE编号

CVE-2017-9392

利用情况

暂无

补丁情况

N/A

披露时间

2019-06-18

漏洞描述

An issue was discovered on Vera VeraEdge 1.7.19 and Veralite 1.7.481 devices. The device provides UPnP services that are available on port 3480 and can also be accessed via port 80 using the url "/port_3480". It seems that the UPnP services provide "request_image" as one of the service actions for a normal user to retrieve an image from a camera that is controlled by the controller. It seems that the "res" (resolution) parameter passed in the query string is not sanitized and is stored on the stack which allows an attacker to overflow the buffer. The function "LU::Generic_IP_Camera_Manager::REQ_Image" is activated when the lu_request_image is passed as the "id" parameter in the query string. This function then calls "LU::Generic_IP_Camera_Manager::GetUrlFromArguments". This function retrieves all the parameters passed in the query string including "res" and then uses the value passed in it to fill up buffer using the sprintf function. However, the function in this case lacks a simple length check and as a result an attacker who is able to send more than 184 characters can easily overflow the values stored on the stack including the $RA value and thus execute code on the device.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
http://packetstormsecurity.com/files/153242/Veralite-Veraedge-Router-XSS-Comm...
https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Vera_sec_issues.pdf
https://seclists.org/bugtraq/2019/Jun/8

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	系统	getvera	veraedge_firmware	*		Up to (including) 1.7.19
	运行在以下环境
	系统	getvera	veralite_firmware	*		Up to (including) 1.7.481
	运行在以下环境
	硬件	getvera	veraedge	-	-
	运行在以下环境
	硬件	getvera	veralite	-	-

CVSS3评分 8.8

• 攻击路径 网络
• 攻击复杂度 低
• 权限要求 低
• 影响范围 未更改
• 用户交互 无
• 可用性 高
• 保密性 高
• 完整性 高

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-ID 漏洞类型 CWE-119 内存缓冲区边界内操作的限制不恰当