CVE-2017-3858
HighSummary
A vulnerability in the web framework of Cisco IOS XE Software could allow an authenticated, remote attacker to inject arbitrary commands that are executed with root privileges. The vulnerability is due to insufficient input validation of HTTP parameters supplied by the user.
Risk Assessment
An attacker who successfully exploits this vulnerability could gain full system privileges, posing a serious security threat to Cisco devices within the organization.
Recommendation
It is recommended to update Cisco IOS XE software to a version that is not vulnerable to this flaw and to implement appropriate security measures, such as restricting access to the administrative interface.
Other vulnerabilities in Cisco IOS XE Software Release 16.2.1
Original NVD description (English source)
A vulnerability in the web framework of Cisco IOS XE Software could allow an authenticated, remote attacker to inject arbitrary commands that are executed with root privileges. The vulnerability is due to insufficient input validation of HTTP parameters supplied by the user. An attacker could exploit this vulnerability by authenticating to the device and submitting crafted input to the affected web page parameter. The user must be authenticated to access the affected parameter. A successful exploit could allow the attacker to execute commands with root privileges. This vulnerability affects Cisco devices running Cisco IOS XE Software Release 16.2.1, if the HTTP Server feature is enabled for the device. The newly redesigned, web-based administration interface was introduced in the Denali 16.2 Release of Cisco IOS XE Software. The web-based administration interface in earlier releases of Cisco IOS XE Software is not affected by this vulnerability. Cisco Bug IDs: CSCuy83069.

