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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3223 Citrix SD-WAN Multiple Security Updates 23 October 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Citrix NetScaler SD-WAN Publisher: Citrix Operating System: Network Appliance Virtualisation Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-17448 CVE-2018-17447 CVE-2018-17446 CVE-2018-17445 CVE-2018-17444 CVE-2016-4793 CVE-2012-2104 Original Bulletin: https://support.citrix.com/article/CTX236992 - --------------------------BEGIN INCLUDED TEXT-------------------- CTX236992 Citrix SD-WAN Multiple Security Updates Security Bulletin | 2 found this helpful | Created: 22 Oct 2018 | Modified: 22 Oct 2018 Description of Problem Multiple vulnerabilities have been identified in the management interface of Citrix NetScaler SD-WAN physical appliances and virtual appliances. Collectively these vulnerabilities could allow an unauthenticated attacker with access to the management interface to compromise the host. The vulnerabilities have been assigned the following CVE numbers. CVE-2018-17444 - Directory traversal in Citrix SD-WAN 10.1.0 and NetScaler SD-WAN 9.3.x before 9.3.6 and 10.0.x before 10.0.4. CVE-2018-17445 - Command Injection in Citrix SD-WAN 10.1.0 and NetScaler SD-WAN 9.3.x before 9.3.6 and 10.0.x before 10.0.4. CVE-2018-17446 - SQL Injection in in Citrix SD-WAN 10.1.0 and NetScaler SD-WAN 9.3.x before 9.3.6 and 10.0.x before 10.0.4. CVE-2018-17447 - Information exposure through log files in Citrix SD-WAN 10.1.0 and NetScaler SD-WAN 9.3.x before 9.3.6 and 10.0.x before 10.0.4. CVE-2018-17448 - Incorrect Access Controls in Citrix SD-WAN 10.1.0 and NetScaler SD-WAN 9.3.x before 9.3.6 and 10.0.x before 10.0.4. CVE-2012-2104 - Munin Remote Command Injection Vulnerability. CVE-2016-4793 - The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header. Citrix NetScaler SD-WAN WAN Optimization Edition is not affected. - ------------------------------------------------------------------------------- Mitigating Factors In order to protect against these vulnerabilities and web application related issues, Citrix recommends access to the management interface of the appliance be restricted. In situations where customers have deployed their appliances in line with industry best practice, network access to this interface should already be restricted. Security Best Practices: 9.3.x - https://docs.citrix.com/en-us/netscaler-sd-wan/9-3/ security-best-practices.html 10.x - https://docs.citrix.com/en-us/netscaler-sd-wan/10/best-practices/ security-best-practices.html White listing connections by IP address under: Configuration -> Appliance Settings -> Network Adapters -> IP Address -> Management Interface Whitelist. This feature can be used to ensure only known networks or hosts can connect to the SDWAN management interface. - ------------------------------------------------------------------------------- What Customers Should Do These vulnerabilities have been addressed in the following software versions: o NetScaler SD-WAN 9.3.6 o NetScaler SD-WAN 10.0.4* o Citrix SD-WAN 10.1.1 Citrix strongly recommends that customers using vulnerable combinations of hardware and software upgrade their appliances to the new version or later as soon as possible. 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 interfaces of the NetScaler SD-WAN appliances to trusted network traffic only. * CVE-2016-4793 mitigations are not included in 10.0.4 release but will be addressed in a future release. The interim mitigation for this issue is limiting access to the management interface of the NetScaler SD-WAN appliance to trusted network traffic only. - ------------------------------------------------------------------------------- Acknowledgements Citrix thanks Denis Kolegov, Nikita Oleksov, Nikolay Tkachenko, Oleg Broslavsky, Sergey Gordeychik of www.scada.sl for working with us to protect Citrix customers. - ------------------------------------------------------------------------------- What Citrix Is Doing Citrix is notifying customers and channel partners about this potential security issue. This article is also available from the Citrix Knowledge Center at http://support.citrix.com/. - ------------------------------------------------------------------------------- Obtaining Support on This Issue If you require technical assistance with this issue, please contact Citrix Technical Support. Contact details for Citrix Technical Support are available at https://www.citrix.com/support/open-a-support-case.html. - ------------------------------------------------------------------------------- Reporting Security Vulnerabilities Citrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously. For guidance on how to report security-related issues to Citrix, please see the following document: CTX081743 - - Reporting Security Issues to Citrix - ------------------------------------------------------------------------------- Changelog +------------------------------+----------------------------------------------+ |Date |Change | +------------------------------+----------------------------------------------+ |October 22nd 2018 |Initial bulletin published | +------------------------------+----------------------------------------------+ - --------------------------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: 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 iQIVAwUBW850rWaOgq3Tt24GAQju7RAAx+ImlzzJC376ENsaKpURGKBWl5Ye4Hsq 4/vJNkqcuLULvfBwfgzlcPljcWg5lLTF789gJH1XWj1c2LTgmNrjNIgMYpU8rcdH xqwuonQgQchrnO1+x9WuNh4rOP8IUF/u/vww6SaR8adl+WIaelgOPNuhLBG/paPO foTeO4oveSMi5KpKakLJFoc8m9hPmUEbeogiajYlDrs9MDdYMtgOUWRP7ljN/ypi pgNPTuS5qrwLD+aU+irKk3aS/KFLrWWBqLlKNg4qIh+UYUhJZqaeBrr6KEQ0GMFh PvP74ftpnJDfnYaro2DDhyzjA7JVMLqUpVGelTsLclcqVuOCIvKUiXl8UqCMTGtH IoiULlqoDoKwPlNR2VSl2MbR9TQjMpfFZrNZ2PTy84SxuW9SHVsx3ss+GlmdLPlE kOq2IKCUdrYN0cTRNyViQrRQxHnMLCkfq21c21BIIT6I8vrFrKDKydVSM0or+qzP WdWzwWfTxK8SuSOLV8wT3DiX1/oAxakhISlr20r410nwZ0nrTT8WjwXYt4/ILfiu 5E9hAly68b+SZ0r9R0KCS5HzOkYB4waD3iatI6oj1pdJOhEZHWZ0vBzaqYNSrdGg k4IZSlD6+11y5WgkkXHhXJfSGb8r/h/06os9neboODzwZrEDO3JJ1GQGhKjjAcNm bapLaTC1lM4= =zIY0 -----END PGP SIGNATURE-----