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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3211.2 Multiple Cisco Enterprise Network Functions Virtualization Infrastructure Software Vulnerabilities 12 September 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Enterprise Network Functions Virtualization Infrastructure Software Publisher: Cisco Systems Operating System: Cisco Impact/Access: Overwrite Arbitrary Files -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-12623 CVE-2019-1984 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-nfv-filewrite https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-nfv-enumeration Comment: This bulletin contains two (2) Cisco Systems security advisories. Revision History: September 12 2019: Initial target release of fixed code is still affected. Added information about new target release for the complete fix. August 22 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Enterprise Network Functions Virtualization Infrastructure Software Arbitrary File Write Vulnerability Priority: Medium Advisory ID: cisco-sa-20190821-nfv-filewrite First Published: 2019 August 21 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvp17532 CVE-2019-1984 CWE-20 CVSS Score: 6.5 AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H/E:X/RL:X/RC:X Summary o A vulnerability in Cisco Enterprise Network Functions Virtualization Infrastructure Software (NFVIS) could allow an authenticated, remote attacker with administrator privileges to overwrite files on the underlying operating system (OS) of an affected device. The vulnerability is due to improper input validation in an NFVIS file-system command. An attacker could exploit this vulnerability by using crafted variables during the execution of an affected command. A successful exploit could allow the attacker to overwrite arbitrary files on the underlying OS. 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-20190821-nfv-filewrite Affected Products o Vulnerable Products At the time of publication, this vulnerability affected Cisco Enterprise NFVIS releases earlier than Release 3.12.1. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o 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. Fixed Releases At the time of publication, Cisco Enterprise NFVIS releases 3.12.1 and later contained the fix for this vulnerability. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. 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-20190821-nfv-filewrite Revision History o +---------+--------------------------+---------+--------+-----------------+ | Version | Description | Section | Status | Date | +---------+--------------------------+---------+--------+-----------------+ | 1.0 | Initial public release. | - | Final | 2019-August-21 | +---------+--------------------------+---------+--------+-----------------+ - ------------------------------------------------------------------------------- Cisco Enterprise Network Functions Virtualization Infrastructure Software File Enumeration Vulnerability Priority: Medium Advisory ID: cisco-sa-20190821-nfv-enumeration First Published: 2019 August 21 16:00 GMT Last Updated: 2019 September 11 19:15 GMT Version 2.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvp99184 CVE-2019-12623 CWE-538 CVSS Score: 4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:X Summary o A vulnerability in the web server functionality of Cisco Enterprise Network Functions Virtualization Infrastructure Software (NFVIS) could allow an authenticated, remote attacker to perform file enumeration on an affected system. The vulnerability is due to the web server responding with different error codes for existing and non-existing files. An attacker could exploit this vulnerability by sending GET requests for different file names. A successful exploit could allow the attacker to enumerate files residing on the system. Cisco will release 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-20190821-nfv-enumeration Affected Products o Vulnerable Products At the initial time of publication, this vulnerability affected Cisco Enterprise Network Compute Systems that were running NFVIS releases earlier than Release 3.12.1. The fix has been found to be incomplete in NFVIS releases 3.12.1 and 3.12.2. NFVIS releases 4.1 and later will contain the complete fix. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o 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. Fixed Releases At the initial time of publication, Cisco Enterprise NFVIS releases 3.12.1 and later contained the fix for this vulnerability. The fix has been found to be incomplete in NFVIS releases 3.12.1 and 3.12.2. NFVIS releases 4.1 and later will contain the complete fix. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. 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 Cisco would like to thank Tahir Khan and team from Verizon's product security group for reporting this vulnerability. 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-20190821-nfv-enumeration Revision History o +---------+---------------------+------------+--------+-------------------+ | Version | Description | Section | Status | Date | +---------+---------------------+------------+--------+-------------------+ | | Initial target | | | | | | release of fixed | Summary, | | | | | code is still | Vulnerable | | | | 2.0 | affected. Added | Products, | Final | 2019-September-11 | | | information about | and Fixed | | | | | new target release | Software | | | | | for the complete | | | | | | fix. | | | | +---------+---------------------+------------+--------+-------------------+ | 1.0 | Initial public | - | Final | 2019-August-21 | | | release. | | | | +---------+---------------------+------------+--------+-------------------+ - --------------------------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. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. 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