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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0244 Cisco IOS XE SD-WAN Software Default Credentials Vulnerability 24 January 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco IOS XE SD-WAN Publisher: Cisco Systems Operating System: Cisco Impact/Access: Administrator Compromise -- Console/Physical Resolution: Patch/Upgrade CVE Names: CVE-2019-1950 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sd-wan-cred-EVGSF259 - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco IOS XE SD-WAN Software Default Credentials Vulnerability Priority: High Advisory ID: cisco-sa-sd-wan-cred-EVGSF259 First Published: 2020 January 22 16:00 GMT Version 1.0: Final Workarounds: YesCisco Bug IDs: CSCvk59282 CVE-2019-1950 CWE-255 CVSS Score: 8.4 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X Summary o [CVE-2019-1950_su] A vulnerability in Cisco IOS XE SD-WAN Software could allow an unauthenticated, local attacker to gain unauthorized access to an affected device. The vulnerability is due to the existence of default credentials within the default configuration of an affected device. An attacker who has access to an affected device could log in with elevated privileges. A successful exploit could allow the attacker to take complete control of the device. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-sd-wan-cred-EVGSF259 [/CVE-2019-1950_su] Affected Products o [CVE-2019-1950_ap] [/CVE-2019-1950_ap] Vulnerable Products [CVE-2019-1950_vp] This vulnerability affects Cisco devices that are running Cisco IOS XE SD-WAN Software releases 16.11 and earlier. [/CVE-2019-1950_vp] Products Confirmed Not Vulnerable [CVE-2019-1950_nv] Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. [/CVE-2019-1950_nv] Workarounds o [CVE-2019-1950_wa] To check for the presence of default credentials, customers can use the show running-configuration | include username admin command within the Cisco IOS XE SD-WAN Software command line. To remove the default credentials, customers can use the config-transaction and no username admin commands. [/CVE-2019-1950_wa] Fixed Software o [CVE-2019-1950_fs] 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. [/CVE-2019-1950_fs] [CVE-2019-1950_fr] Fixed Releases Cisco fixed this vulnerability in Cisco IOS XE SD-WAN Software Release 16.12.1. [/CVE-2019-1950_fr] Exploitation and Public Announcements o [CVE-2019-1950_ex] 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. [/CVE-2019-1950_ex] Source o [CVE-2019-1950_vs] This vulnerability was found during internal security testing. [/CVE-2019-1950_vs] 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-sd-wan-cred-EVGSF259 Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2020-JAN-22 | +----------+---------------------------+----------+--------+--------------+ - --------------------------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. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. 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: auscert@auscert.org.au 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXipDtmaOgq3Tt24GAQjL+A/+NrhJeAzbGpsPOfeL0EJeB6Vuwi4b3h9D A4LF2g1sqDmBhXmYaA2PVyYpc6IB6DtvACTEfSumPNhlbsGbjXQpGqPNNWjxDxfq WeDwPA759/q/kophCUTRTfozDeLcex/yESejCpKsmDzp6YgWExd1t5e2ciUWKRXG RNIasqSQaVfyqArkkmknSimaGqMP+SXkDJ5T0YHqBk2Aw9eR+Vr1VuKRkSEgbMJX Lj1w8KL7RQg5sh+n/avrfTDroS4gpVrpRQvNdMOgRh23d95a4MSgoRwe5JHpsIzS vs13jZwxX6W/zwM82EcVKugLhm/aDTtmLR4zPrwzmTv+pcCp4YEG/nOZ72q2h+iL 6d2j8dmRe6eSWY/69AYMdUzhvbOII8iev+atFXE0aCKvmVuvbAd2im8KQEGkODUQ aWSyZziPy2r/N+oK5rezpsRyR5K5Edqt4S3L1jq5B2YdAcjuOzvG3ePI0FyMHyoJ 9a9/9jRCRFpTLb/x0PtAJZMebdqW6kkmGLXuvKrceNpC1MnT3GjcvM6aM5QDGb0l hFRW2urj+a2/MDiwMl5gjPieB4+XH1oDN0Ey7GVSS7Hom1Pg1BWUfOYlCCHpnDUW PUyVIuPpeNdE3qAiZIPowPvx/JDycuyIc+rPHZfff8zve6yuJMtMX8Du1H8n9Te/ WPLSZPsVC+Y= =W3XH -----END PGP SIGNATURE-----