CVE-2017-6753 — HIGH (8.8) — White Hats Nepal

Vulnerability Description

A vulnerability in Cisco WebEx browser extensions for Google Chrome and Mozilla Firefox 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, Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center), and Cisco WebEx Meetings when they are running on Microsoft Windows. The vulnerability is due to a design defect in the extension. An attacker who 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. The following versions of the Cisco WebEx browser extensions are affected: Versions prior to 1.0.12 of the Cisco WebEx extension on Google Chrome, Versions prior to 1.0.12 of the Cisco WebEx extension on Mozilla Firefox. Cisco Bug IDs: CSCvf15012 CSCvf15020 CSCvf15030 CSCvf15033 CSCvf15036 CSCvf15037.

CVSS Score

8.8

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Cisco	Webex Event Center	t30_base
Cisco	Webex Meeting Center	t30_base
Cisco	Webex Meetings	t30_base
Cisco	Webex Meetings Server	1.1_base
Cisco	Webex Meetings Server 2.0	mr2
Cisco	Webex Meetings Server 2.0 Mr8 Patch	1
Cisco	Webex Meetings Server 2.0 Mr9 Patch	1
Cisco	Webex Meetings Server 2.5	mr1
Cisco	Webex Meetings Server 2.5 Mr2 Patch	1
Cisco	Webex Meetings Server 2.5 Mr5 Patch	1
Cisco	Webex Meetings Server 2.5 Mr6 Patch	1
Cisco	Webex Meetings Server 2.6	mr1
Cisco	Webex Meetings Server 2.6 Mr1 Patch	1
Cisco	Webex Meetings Server 2.6 Mr2 Patch	1
Cisco	Webex Meetings Server 2.6 Mr3 Patch	1
Cisco	Webex Meetings Server 2.7	mr1
Cisco	Webex Meetings Server 2.7 Mr1 Patch	1
Cisco	Webex Meetings Server 2.7 Mr2 Patch	1
Cisco	Webex Support Center	t30_base
Cisco	Webex Training Center	t30_base

Related Weaknesses (CWE)

CWE-119

References

http://www.securityfocus.com/bid/99614Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038909Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038910Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038911Third Party AdvisoryVDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
http://www.securityfocus.com/bid/99614Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038909Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038910Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038911Third Party AdvisoryVDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory

FAQ

What is CVE-2017-6753?

CVE-2017-6753 is a vulnerability with a CVSS score of 8.8 (HIGH). A vulnerability in Cisco WebEx browser extensions for Google Chrome and Mozilla Firefox could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected br...

How severe is CVE-2017-6753?

CVE-2017-6753 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-6753?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Webex Event Center, Cisco Webex Meeting Center, Cisco Webex Meetings, Cisco Webex Meetings Server, Cisco Webex Meetings Server 2.0.