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2019-10 Security Bulletin: Junos OS: NFX150 Series, QFX10K Series, EX9200 Series, MX Series, PTX Series: Path traversal vulnerability in NFX150 and NG-RE leads to information disclosure. (CVE-2019-0074)

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Article ID: JSA10975 SECURITY_ADVISORIES Last Updated: 09 Oct 2019Version: 2.0
Product Affected:
This issue affects Junos OS 15.1F, 16.1, 17.1, 17.2, 17.3, 17.4, 18.1, 18.2, 18.2X75, 18.3, 18.4. Affected platforms: NFX150, EX9200 with NG-RE, MX with NG-RE, PTX with NG-RE, and QFX10K with NG-RE.
Problem:
A path traversal vulnerability in NFX150 Series and QFX10K Series, EX9200 Series, MX Series and PTX Series devices with Next-Generation Routing Engine (NG-RE) allows a local authenticated user to read sensitive system files.

This issue only affects NFX150 Series and QFX10K Series with NG-RE, EX9200 Series with NG-RE, MX Series with NG-RE and PTX Series with NG-RE; which uses vmhost.

This issue affects Juniper Networks Junos OS on NFX150 Series and QFX10K, EX9200 Series, MX Series and PTX Series with NG-RE and vmhost:

15.1F versions prior to 15.1F6-S12

16.1 versions starting from 16.1R6 and later releases, including the Service Releases, prior to 16.1R6-S6, 16.1R7-S3;

17.1 versions prior to 17.1R3;

17.2 versions starting from 17.2R1-S3, 17.2R3 and later releases, including the Service Releases, prior to 17.2R3-S1;

17.3 versions starting from 17.3R1-S1, 17.3R2 and later releases, including the Service Releases, prior to 17.3R3-S3;

17.4 versions starting from 17.4R1 and later releases, including the Service Releases, prior to 17.4R1-S6, 17.4R2-S2, 17.4R3;

18.1 versions prior to 18.1R2-S4, 18.1R3-S3;

18.2 versions prior to 18.2R2;

18.2X75 versions prior to 18.2X75-D40;

18.3 versions prior to 18.3R1-S2, 18.3R2;

18.4 versions prior to 18.4R1-S1, 18.4R2.

This issue does not affect:

Juniper Networks Junos OS 15.1 and 16.2.

To identify whether the device has NG-RE with vmhost, customer can run the following command:

> show vmhost status
Compute cluster: rainier-re-cc
Compute Node: rainier-re-cn, Online

If the "show vmhost status" is not supported, then the device does not have NG-RE with vmhost.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was found during internal product security testing or research.

This issue has been assigned CVE-2019-0074.

Solution:
The following software releases have been updated to resolve these specific issues: 15.1F6-S12, 16.1R6-S6, 16.1R7-S3, 17.1R3, 17.2R3-S1, 17.3R3-S3, 17.4R1-S6, 17.4R2-S2, 17.4R3, 18.1R2-S4, 18.1R3-S3, 18.2R2, 18.2R3, 18.2X75-D40, 18.3R1-S2, 18.3R2, 18.4R1-S1, 18.4R2, 19.1R1, and all subsequent releases.

This issue is being tracked as PR 1398333 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).

Workaround:
There are no known workarounds for this issue.
Implementation:
Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/.
Modification History:
2019-10-09: Initial Publication.
CVSS Score:
5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
Severity Level:
Medium
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."
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