Executive Summary

Informations
Name CVE-2017-9391 First vendor Publication 2019-06-17
Vendor Cve Last vendor Modification 2019-06-20

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 8.8
Base Score 8.8 Environmental Score 8.8
impact SubScore 5.9 Temporal Score 8.8
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:C/I:C/A:C)
Cvss Base Score 9 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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 "URL" 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 query string. This function then calls "LU::Generic_IP_Camera_Manager::GetUrlFromArguments" and passes a "pointer" to the function where it will be allowed to store the value from the URL parameter. This pointer is passed as the second parameter $a2 to the function "LU::Generic_IP_Camera_Manager::GetUrlFromArguments". However, neither the callee or the caller in this case performs a simple length check and as a result an attacker who is able to send more than 1336 characters can easily overflow the values stored on the stack including the $RA value and thus execute code on the device.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9391

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 1
Os 1

Sources (Detail)

Source Url
BUGTRAQ https://seclists.org/bugtraq/2019/Jun/8
MISC http://packetstormsecurity.com/files/153242/Veralite-Veraedge-Router-XSS-Comm...
https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Vera_sec_issues...

Alert History

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Date Informations
2020-05-23 02:09:10
  • Multiple Updates
2020-05-23 01:04:44
  • Multiple Updates
2019-06-20 17:19:18
  • Multiple Updates
2019-06-18 17:19:23
  • Multiple Updates
2019-06-18 05:19:10
  • First insertion