20 June 2019
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2205 Cisco Meeting Server CLI Command Injection Vulnerability 20 June 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Meeting Server Publisher: Cisco Systems Operating System: Cisco Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-1623 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190619-cms-codex - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Meeting Server CLI Command Injection Vulnerability Priority: High Advisory ID: cisco-sa-20190619-cms-codex First Published: 2019 June 19 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvk42093 CVE-2019-1623 CWE-77 CVSS Score: 6.7 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X Summary o A vulnerability in the CLI configuration shell of Cisco Meeting Server could allow an authenticated, local attacker to inject arbitrary commands as the root user. The vulnerability is due to insufficient input validation during the execution of a vulnerable CLI command. An attacker with administrator-level credentials could exploit this vulnerability by injecting crafted arguments during command execution. A successful exploit could allow the attacker to perform arbitrary code execution as root on an affected product. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190619-cms-codex Affected Products o Vulnerable Products This vulnerability affects Cisco Meeting Server deployments that are running Software Releases prior to 2.2.14 and 2.3.8. Administrators can determine which Cisco Meeting Server Software release is running on a device by using the version command in the CLI. The following example shows the output of the command for a device that is running Cisco Meeting Server Software Release 2.6.1: system> version 2.6.1 Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Details o Cisco Meeting Server incorporates video, audio, and content-sharing capabilities into software that can be accessed via a conference room, desktop, or mobile device. Cisco Meeting Server works across Cisco video rooms and connects with Skype for Business and other hardware providers to allow a seamless meeting architecture. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o Cisco has released free software updates that address the vulnerability 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: Cisco Meeting Server Software First Fixed Release for This Release Vulnerability 2.2 2.2.14 ^1 2.3 2.3.8 ^1 2.4 Not vulnerable 2.5 Not vulnerable 2.6 Not vulnerable 1. Cisco Meeting Server Software Releases 2.2 and 2.3 have reached End of Software Maintenance. For information about the Cisco Meeting Server Software release model, refer to Cisco Meeting Server: End of maintenance and support policy . Exploitation and Public Announcements o The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source o This vulnerability was found during internal security testing. Cisco Security Vulnerability Policy o To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy . This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190619-cms-codex Revision History o +---------+---------------------------+---------+--------+---------------+ | Version | Description | Section | Status | Date | +---------+---------------------------+---------+--------+---------------+ | 1.0 | Initial public release. | - | Final | 2019-June-19 | +---------+---------------------------+---------+--------+---------------+ - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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