Vulnerabilities > CVE-2018-17173 - Code Injection vulnerability in LG Supersign CMS 2.5

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
lg
CWE-94
critical
exploit available

Summary

LG SuperSign CMS allows remote attackers to execute arbitrary code via the sourceUri parameter to qsr_server/device/getThumbnail.

Vulnerable Configurations

Part Description Count
Application
Lg
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Manipulating User-Controlled Variables
    This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

Exploit-Db

  • descriptionLG SuperSign EZ CMS 2.5 - Remote Code Execution. CVE-2018-17173. Webapps exploit for Hardware platform. Tags: Remote
    fileexploits/hardware/webapps/45448.py
    idEDB-ID:45448
    last seen2018-10-07
    modified2018-09-24
    platformhardware
    port9080
    published2018-09-24
    reporterExploit-DB
    sourcehttps://www.exploit-db.com/download/45448/
    titleLG SuperSign EZ CMS 2.5 - Remote Code Execution
    typewebapps
  • fileexploits/hardware/remote/46795.rb
    idEDB-ID:46795
    last seen2019-05-06
    modified2019-05-06
    platformhardware
    port9080
    published2019-05-06
    reporterExploit-DB
    sourcehttps://www.exploit-db.com/download/46795
    titleLG Supersign EZ CMS - Remote Code Execution (Metasploit)
    typeremote

Packetstorm

The Hacker News

idTHN:B650445577B845AD521728D6AEF15603
last seen2019-03-19
modified2019-03-19
published2019-03-19
reporterThe Hacker News
sourcehttps://thehackernews.com/2019/03/mirai-botnet-enterprise-security.html
titleMirai Variant Adds Dozen New Exploits to Target Enterprise IoT Devices