2015-10 Security Bulletin: Junos: Multiple privilege escalation vulnerabilities in Python on Junos (CVE-2014-6448)

Product Affected:This issue can affect any product or platform running Junos OS releases 13.2​ and 13.3.

Problem:Multiple vulnerabilities in Python on Junos may allow an authenticated user with shell access on the Junos device to run arbitrary python code, bypassing system protections that prevent running untrusted code. This can potentially enable elevation of privileges to gain complete control of the device.These issues were found during internal product security testing.Juniper SIRT is not aware of any malicious exploitation of these vulnerabilities.No other Juniper Networks products or platforms are affected by this issue.These issues is assigned CVE-2014-6448.

Solution:The following software releases have been updated to resolve these specific issues: Junos OS 13.2R5, 13.3R3 and all subsequent releases.These issues are being tracked as PR 971889, 971893​, ​971941, 972273, 968728, 968731 and are visible on the Customer Support website. KB16765 – “In which releases are vulnerabilities fixed?” describes which release vulnerabilities are fixed as per our End of Engineering and End of Life support policies.​​

Workaround:Use access lists or firewall filters to limit access to the devices CLI only from trusted hosts.Restrict access to the CLI to only highly trusted administrators.

Implementation:How to obtain fixed software: 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: 2015-10-14: Initial publication

Related Links: CVSS Score:7.8 (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Risk Level:High

Risk Assessment:Information for how Juniper Networks uses CVSS can be found at KB16446 “Common Vulnerability Scoring System (CVSS) and Juniper’s Security Advisories”

Acknowledgements:

Leave a Reply