CVE-2018-0422 Privilege escalation in n/a
Local attackers can modify Webex client files to execute code with elevated privileges on multi-user systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-0422?
CVE-2018-0422 is a high-severity vulnerability in Cisco Webex Meetings Online, published on 5 Oct 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A vulnerability in the folder permissions of Cisco Webex Meetings client for Windows could allow an authenticated, local attacker to modify locally stored files and execute code on a targeted device with the privilege level of the user. The vulnerability is due to folder permissions that grant a user the permission to read, write, and execute files in the Webex folders. An attacker could exploit this vulnerability to write malicious files to the Webex client directory, affecting all other users of the targeted device. A successful exploit could allow a user to execute commands with elevated privileges. Attacks on single-user systems are less likely to occur, as the attack must be carried out by the user on the user's own system. Multiuser systems have a higher risk of exploitation because folder permissions have an impact on all users of the device. For an attacker to exploit this vulnerability successfully, a second user must execute the locally installed malicious file to allow remote code execution to occur.
Weakness: CWE-732
Which versions are affected by CVE-2018-0422?
It affects 5 products.
Products include Cisco Webex Business Suite 31, Cisco Webex Business Suite 32, Cisco Webex Business Suite 33, Cisco Webex Meetings Online, Cisco Webex Meetings Server.
How do I fix CVE-2018-0422?
No fix has been published for CVE-2018-0422 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-0422 being exploited?
There is no known exploitation of CVE-2018-0422 in the wild and no public exploit code.
Other vulnerabilities in Cisco Webex Meetings Online
- CVE-2018-0264 Code injection in Cisco WebEx Advanced Recording Format file players
- CVE-2018-0112 Code injection in Cisco WebEx Clients
- CVE-2018-15409 Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution Vulnerabilities
- CVE-2018-15410 Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution Vulnerabilities
- CVE-2018-15418 Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution Vulnerabilities
Sources
Also known as GHSA-9mx2-579m-fvfq.