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CVE-2019-1925: Cisco Security Advisory: Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerabilities

Multiple vulnerabilities in Cisco Webex Network Recording Player for Microsoft Windows and Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerabilities exist because the affected software improperly validates Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. An attacker could exploit these vulnerabilities by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.

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  • Cisco has released free software updates that address the vulnerabilities described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.

    When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page, to determine exposure and a complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC:
    https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.

    Fixed Releases

    Customers are advised to upgrade to an appropriate fixed software release as indicated in the following table:

    CVE ID

    First Fixed Release for These Vulnerabilities

    Webex Business Suite WBS Latest Sites

    Webex Business Suite WBS 39.5.x Sites

    Webex Meetings Online

    Webex Meetings Server

    CVE-2019-1924

    39.6.0

    39.5.0.632

    1.3.43

    2.8MR3Patch3, 3.0MR2Patch4

    CVE-2019-1925

    39.6.0

    39.5.0.581

    1.3.43

    2.8MR3Patch3, 3.0MR2Patch4

    CVE-2019-1926

    39.6.0

    39.3.0.499

    1.3.43

    2.8MR3Patch3, 3.0MR2Patch4, 4.0

    CVE-2019-1927

    39.6.0

    39.5.0.581

    1.3.43

    2.8MR3Patch3, 3.0MR2Patch4

    CVE-2019-1928

    39.6.0

    39.5.5

    1.3.43

    2.8MR3Patch3, 3.0MR2Patch4

    CVE-2019-1929

    39.6.0

    39.5.5

    1.3.43

    4.0MR1

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