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2017-07 Security Bulletin: Junos OS: buffer overflow vulnerability in Junos CLI (CVE-2017-10602)

  [JSA10803] Show Article Properties


Product Affected:
This issue affects Junos OS 14.1X53, 14.2, 15.1, 15.1X49, 15.1X53.
Problem:

A buffer overflow vulnerability in Junos OS CLI may allow a local authenticated user with read only privileges and access to Junos CLI, to execute code with root privileges.

Affected releases are Juniper Networks Junos OS:
14.1X53 versions prior to 14.1X53-D46 on EX2200/VC, EX3200, EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100;
14.1X53 versions prior to 14.1X53-D130 on QFabric System;
14.2 versions prior to 14.2R4-S9, 14.2R6;
15.1 versions prior to 15.1F5, 15.1R3;
15.1X49 versions prior to 15.1X49-D40 on SRX Series;
15.1X53 versions prior to 15.1X53-D47 on NFX150, NFX250;
15.1X53 versions prior to 15.1X53-D65 on QFX10000 Series;
15.1X53 versions prior to 15.1X53-D233 on QFX5110, QFX5200.

This issue does not affect Junos 14.1 or prior releases.

No other Juniper Networks products or platforms are affected by this issue.

This issue was found during internal product security testing. Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue has been assigned CVE-2017-10602.

Solution:

The following software releases have been updated to resolve this specific issue: 14.1X53-D46, 14.1X53-D130*, 14.2R4-S9, 14.2R6, 15.1F5, 15.1R3, 15.1X49-D40, 15.1X53-D47, 15.1X53-D65, 15.1X53-D233 16.1R1, and all subsequent releases.
*Pending Publication

This issue is being tracked as PR 1149652 and is visible on the Customer Support website.

Workaround:

Use access lists or firewall filters to limit access to the router's CLI only from trusted hosts. Restrict access to the CLI to only highly trusted administrators.

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:
  • 2017-07-12: Initial Publication.
  • 2018-07-06: Updated affected and resolved-in fields.

 

Related Links:
CVSS Score:
7 (CVSS:3.0/AV:L/AC:H/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 KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."