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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2750 2017-10 Security Bulletin: Junos: Potential remote code execution vulnerability in PAM (CVE-2017-10615) 31 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Juniper Junos PAM Publisher: Juniper Networks Operating System: Juniper Networks Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-10615 Original Bulletin: https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10818 - --------------------------BEGIN INCLUDED TEXT-------------------- 2017-10 Security Bulletin: Junos: Potential remote code execution vulnerability in PAM (CVE-2017-10615) Product Affected: This issue affects Junos OS 14.1, 14.1X53, 14.2. Problem: A vulnerability in the pluggable authentication module (PAM) of Juniper Networks Junos OS may allow an unauthenticated network based attacker to potentially execute arbitrary code or crash daemons such as telnetd or sshd that make use of PAM. Affected Juniper Networks Junos OS releases are: 14.1 from 14.1R5 prior to 14.1R8-S4, 14.1R9; 14.1X53 prior to 14.1X53-D46 on EX and QFX series; 14.2 from 14.2R3 prior to 14.2R7-S8, 14.2R8; 15.1F6 prior to 15.1F6-S5; 15.1X49 prior to 15.1X49-D90; 15.1X53 prior to 15.1X53-D63 No other Junos OS releases are affected by this issue. No other Juniper Networks products are affected by this issue. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. This issue has been assigned CVE-2017-10615. Solution: The following software releases have been updated to resolve this specific issue: Junos OS 14.1R8-S3, 14.1R8-S4, 14.1R9, 14.1X53-D46, 14.2R4-S7, 14.2R6-S4, 14.2R7-S6, 14.2R7-S8, 14.2R8, 15.1F6-S5, 15.1X49-D90, 15.1X53-D47, 15.1X53-D63, and all subsequent releases. This issue is being tracked as PR 1192119 and is visible on the Customer Support website. Note: Other Junos OS releases may contain a change for PR 1192119, but are not affected by this issue. Workaround: There are no viable workarounds for this issue. It is good security practice to limit the exploitable attack surface of critical infrastructure networking equipment. Use access lists or firewall filters to limit access to the router only from trusted, administrative networks or hosts. The risk of malicious exploitation can be reduced by disabling services if they are not being used. Implementation: Security vulnerabilities in Junos are fixed in the next available Maintenance Release of each supported Junos version. In some cases, a Maintenance Release is not planned to be available in an appropriate time-frame. For these cases, Service Releases are made available in order to be more timely. Security Advisory and Security Notices will indicate which Maintenance and Service Releases contain fixes for the issues described. Upon request to JTAC, customers will be provided download instructions for a Service Release. Although Juniper does not provide formal Release Note documentation for a Service Release, a list of "PRs fixed" can be provided on request. Modification History: 2017-10-11: Initial Publication. Related Links: B16613: Overview of the Juniper Networks SIRT Monthly Security Bulletin Publication Process KB16765: In which releases are vulnerabilities fixed? KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories CVSS Score: 9.8 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) Risk Level: Critical Risk Assessment: Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories." - --------------------------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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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWffqpox+lLeg9Ub1AQgK1Q/+L/RW+YJVrGG1NkJme/9Bjj4+PRBDIwz8 Lvy7+XdKIppv20Qe/tFHfjzHhBYRs8XN4vwRHFTFXRVhdUPFzb4W2P9HpZexE1Ly KZ8O639JtyYK+XSOUJBK4jVM+cc23bF/bhCUMdfXivMwgBcs0g1MG+fkfRxUYqnj iW3y7ww5JWiThyXpOw4KOTslyO3hGCnp5oGAqTefU6shmqGJWF7TTrIVpMsgBueZ RraaF3UVN7zEs+BNDXX5h08rBB5Hx7ZYecc+d4wXtJXZLgV0ayiqtS28BHJN1du5 yIV7kXefdFYao6vH9Ixp7eCe0nxgIBzXE8XaVZtvZPYhcEJs2yMVXfSGSqH8KuSh 8MYjiAzwRIVl4QbtT7WXMd/NKzVu3PF387qttoBrrpUIcWLC6EpPLkkyJ2WTzlmX gU5a3OBF+f00cRsgq09L8PM1bmE71qInZGOYvsyEHClWcikxyGMIScLwJ+KnfMIe Ep26vKbbaEE0FzoeCpXpqc4O6NNDOFFj/GV5XsNGUekKSYF6edBHthVnWRzUNcWQ AK3DV90dFGIE4xasZrQlrQ32lC95MHPexbOyz0w3QWTrK3KFvu06BLj3O716rqRy ZMfAFMMjBc1y2Bz5nQ5jKqt/5hBU5T2rO3WQ/ugGpR5o+vFDdSSvDm/NKL/garp4 mTFwRR+FfJQ= =AA9Z -----END PGP SIGNATURE-----