CVE-2017-3823
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Metasploit modules
Application impact
References
- http://www.securityfocus.com/bid/95737
- http://www.securitytracker.com/id/1037680
- https://0patch.blogspot.com/2017/01/micropatching-remote-code-execution-in.html
- https://blog.filippo.io/webex-extension-vulnerability/
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1096
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1100
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170124-webex
- https://www.kb.cert.org/vuls/id/909240
- http://www.securityfocus.com/bid/95737
- http://www.securitytracker.com/id/1037680
- https://0patch.blogspot.com/2017/01/micropatching-remote-code-execution-in.html
- https://blog.filippo.io/webex-extension-vulnerability/
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1096
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1100
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170124-webex
- https://www.kb.cert.org/vuls/id/909240
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.