Cisco WebEx Browser Extension Software Updates

Number: AV17-103
Date: 17 July 2017

Purpose

The purpose of this advisory is to bring attention to the recently released Cisco Security Advisory.

Assessment

Cisco has released a security advisory to address a critical vulnerability in its WebEx browser extensions for Google Chrome and Mozilla Firefox. Successful exploitation could allow a remote unauthenticated attacker to execute code and gain full control of an affected device.

 The following versions of the Cisco WebEx browser extensions are affected by the vulnerability:

CVE Reference: CVE-2017-6753

Suggested action

CCIRC recommends that system administrators test and deploy the vendor-released updates to affected applications accordingly.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170717-webex

Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.
http://www.publicsafety.gc.ca/cnt/ntnl-scrt/cbr-scrt/_fl/CCIRCPublicPGPKey.txt

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589
E-mail: ps.communications-communications.sp@canada.ca

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