CVE-2017-3823 Code injection in Cisco WebEx browser extensions
Remote attackers can execute arbitrary code with browser privileges by tricking users into visiting malicious pages using vulnerable Cisco WebEx browser extensions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-3823?
CVE-2017-3823 is a high-severity code injection vulnerability in Cisco Webex Meetings Server, published on 1 Feb 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin Container before 106 on Mozilla Firefox, the GpcContainer Class ActiveX control plugin before 10031.6.2017.0126 on Internet Explorer, and the Download Manager ActiveX control plugin before 2.1.0.10 on Internet Explorer. A vulnerability in these Cisco WebEx browser extensions could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected browser on an affected system. This vulnerability affects the browser extensions for Cisco WebEx Meetings Server and Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center) when they are running on Microsoft Windows. The vulnerability is a design defect in an application programing interface (API) response parser within the extension. An attacker that can convince an affected user to visit an attacker-controlled web page or follow an attacker-supplied link with an affected browser could exploit the vulnerability. If successful, the attacker could execute arbitrary code with the privileges of the affected browser.
Weakness: CWE-119
Which versions are affected by CVE-2017-3823?
It affects 6 products.
Products include Cisco Activetouch General Plugin Container, Cisco Download Manager, Cisco Gpccontainer Class, Cisco Webex, Cisco Webex Meeting Center, Cisco Webex Meetings Server.
How do I fix CVE-2017-3823?
No fix has been published for CVE-2017-3823 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2017-3823 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-3823 exists.
Public exploit code: 1 Metasploit module.
Sources
Also known as GHSA-jvxg-m38c-9fg2.