Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1504 Citrix SD-WAN Security Update 1 May 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Citrix SD-WAN Publisher: Citrix Operating System: Network Appliance Impact/Access: Access Privileged Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-11550 Original Bulletin: https://support.citrix.com/article/CTX247735 - --------------------------BEGIN INCLUDED TEXT-------------------- Citrix SD-WAN Security Update Reference: CTX247735 Category : High Created : 30 Apr 2019 Modified : 30 Apr 2019 Applicable Products o Citrix SD-WAN Description of Problem An information disclosure vulnerability has been identified in the Citrix SD-WAN Appliance. This vulnerability could allow an unauthenticated attacker to perform a man-in-the-middle attack against management traffic. The vulnerability has been assigned the following CVE number. CVE-2019-11550 - Information Disclosure in Citrix SD-WAN Appliance 10.2.x before 10.2.2 and NetScaler SD-WAN Appliance 10.0.x before 10.0.7. Affected Versions: o All versions of NetScaler SD-WAN 9.x * o All versions of NetScaler SD-WAN 10.0.x earlier than 10.0.7 o All versions of Citrix SD-WAN 10.1.x * o All versions of Citrix SD-WAN 10.2.x earlier than 10.2.2 * Upgrade to 10.0.7 or 10.2.2 for security update Mitigating Factors In order to protect against these vulnerabilities and web application related issues, Citrix recommends access to the management console be restricted. In situations where customers have deployed their management console in line with industry best practice, network access to this interface should already be restricted. Security Best Practices: 10.x - https://docs.citrix.com/en-us/netscaler-sd-wan/10/best-practices/security-best-practices.html What Customers Should Do These vulnerabilities have been addressed in the following software versions: o NetScaler SD-WAN 10.0.7 o Citrix SD-WAN 10.2.2 Citrix strongly recommends that customers using vulnerable software upgrade their management console to the new version or later as soon as possible. If using a version of SD-WAN that is no longer supported, upgrade to the new version of the product that includes the security update. The new software versions will be available on the Citrix website. Information on the available versions can be found at the following location: https://www.citrix.com/downloads/netscaler-sd-wan/ In line with general best practice, Citrix also recommends that customers limit access to the management console of the Citrix SD-WAN Appliance / NetScaler SD-WAN Appliance to trusted network traffic only. Acknowledgements Citrix thanks Sergey Gordeychik, Denis Kolegov, and Nikita Oleksov of SD-WAN New Hop(e) team for working with us to protect Citrix customers. Changelog +-----------------------------------+-----------------------------------------+ |Date |Change | +-----------------------------------+-----------------------------------------+ |30th April 2019 |Initial publishing | +-----------------------------------+-----------------------------------------+ - --------------------------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 iQIVAwUBXMk2cWaOgq3Tt24GAQgyKA//chmuQcj87BG3k6K/VGDd4H9CqZW2pHq9 C+R5REXW736nnNQc0chAXF7g2II/uCEG1lMNJPaltS3Tw/qQZUU5R56NNvurV4/x tLUnDOMPldkT9BY+m8mfnPlBT7yKU6Mvr29RGIo+JHiIlVwTR3PFpt6hslPulfYe j0G7bp7O2ojKf3iIvsdBhwk0tSxIea3203/XGe76AgkhrCUyLEx9SX3KCm70mro/ hpEeyyZ6SJJMkizlhG6HgXQAU1pgYt7Dppxfz51/aImNnpePCx+dG9Kq5YutAbtx WQ0HnDrMESk9J1QUIEdGL0tr5RvLfUhOLceBsZirHhcw2aDQKUCiI8nfguziJ/M1 aFP4+Gdy71sPq17fNeuLh7iyX3TRq6g1hLkyLvsV9O4GeYvFM4GIq77RfEXnAr5E bFfDFFLRY2STx42UesaqeCxQlULiuUjBN/CfcR3avhZPBkxTsgP6lmVWVhboWKzL cqypEA4RtG/JVpMABpS178sQw7jMfyyszmm07oACIKaGbhIYeuQrhOdQX5VfBSoB Ui5JqJ/snV8p4wovktXIw/CMRj1Zc4DitShgtsgjjtSxAh1Yen6OFJGedTNTIUu3 zFwVB2hF8SA4jMGBD0O3s/Emz6+dfPt8IIuD9CBalnxlIA7jAAxKXm9S4yAQ/JW3 UBRt2g0qbZI= =WDS+ -----END PGP SIGNATURE-----