ID CVE-2018-0461
Summary A vulnerability in the Cisco IP Phone 8800 Series Software could allow an unauthenticated, remote attacker to conduct an arbitrary script injection attack on an affected device. The vulnerability exists because the software running on an affected device insufficiently validates user-supplied data. An attacker could exploit this vulnerability by persuading a user to click a malicious link provided to the user or through the interface of an affected device. A successful exploit could allow an attacker to execute arbitrary script code in the context of the user interface or access sensitive system-based information, which under normal circumstances should be prohibited.
Vulnerable Configurations
  • cpe:2.3:o:cisco:ip_phone_8800_series_firmware:12.5%281%29
  • cpe:2.3:h:cisco:ip_phone_8811
  • cpe:2.3:h:cisco:ip_phone_8841
  • cpe:2.3:h:cisco:ip_phone_8845
  • cpe:2.3:h:cisco:ip_phone_8851
  • cpe:2.3:h:cisco:ip_phone_8861
  • cpe:2.3:h:cisco:ip_phone_8865
Base: 6.8
  • 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://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.
packetstorm via4
data source
last seen 2019-01-10
published 2019-01-10
reporter W. Schober
title Cisco VoIP Script Insertion / Weak Passwords / Undocumented Functionality
refmap via4
bid 106515
cisco 20190109 Cisco IP Phone 8800 Series Arbitrary Script Injection Vulnerability
Last major update 10-01-2019 - 11:29
Published 10-01-2019 - 11:29
Last modified 12-02-2019 - 16:40
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