ESB-2017.2001 - [Juniper] Juniper Junos: Multiple vulnerabilities 2017-08-11

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2001
      Multiple vulnerabilities have been identified in Juniper Junos
                              11 August 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Juniper Junos
Publisher:         Juniper Networks
Operating System:  Juniper
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-2347 CVE-2016-3074 

Reference:         ASB-2016.0051
                   ESB-2017.0119
                   ESB-2016.2728
                   ESB-2016.1379
                   ESB-2016.1019

Original Bulletin: 
   https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10795
   https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10798

Comment: This bulletin contains two (2) Juniper Networks security advisories.

- --------------------------BEGIN INCLUDED TEXT--------------------

017-07 Security Bulletin: Junos: Denial of Service vulnerability in rpd
daemon (CVE-2017-2347)

Product Affected:
This issue affects Junos OS 12.3X48, 13.3, 14.1, 14.1X53, 14.2, 15.1,
15.1X49, 15.1X53, 16.1.

Problem:

A denial of service vulnerability in rpd daemon of Juniper Networks Junos
OS allows a malformed MPLS ping packet to crash the rpd daemon. Repeated
crashes of the rpd daemon can result in an extended denial of service
condition for the device.

The affected releases are Junos OS 12.3X48 prior to 12.3X48-D50, 12.3X48-D55;
13.3 prior to 13.3R10; 14.1 prior to 14.1R4-S13, 14.1R8-S3, 14.1R9;
14.1X53 prior to 14.1X53-D42, 14.1X53-D50; 14.2 prior to 14.2R4-S8,
14.2R7-S6, 14.2R8; 15.1 prior to 15.1F2-S14, 15.1F5-S7, 15.1F6-S4,
15.1F7, 15.1R4-S7, 15.1R5-S1, 15.1R6; 15.1X49 prior to 15.1X49-D100;
15.1X53 prior to 15.1X53-D105, 15.1X53-D47, 15.1X53-D62, 15.1X53-D70;
16.1 prior to 16.1R3-S3, 16.1R4.

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

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

This issue has been assigned CVE-2017-2347.

Solution:

The following software releases have been updated to resolve this specific
issue: 12.3X48-D50, 12.3X48-D55, 13.3R10, 14.1R4-S13, 14.1R8-S3, 14.1R9,
14.1X53-D42, 14.1X53-D50, 14.2R4-S8, 14.2R7-S6, 14.2R8, 15.1F2-S14,
15.1F5-S7, 15.1F6-S4, 15.1F7, 15.1R4-S7, 15.1R5-S1, 15.1R6, 15.1X49-D100,
15.1X53-D105, 15.1X53-D47, 15.1X53-D62, 15.1X53-D70, 16.1R3-S3, 16.1R4,
16.2R1, 17.1R1, and all subsequent releases.

This issue is being tracked as PR 1204027 and is visible on the Customer
Support website.

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.

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.
    2017-08-09 Problem description update: Confirmed that MPLS OAM
    configuration is not a required condition to exploit this vulnerability.

Related Links:

    KB16613: 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

    Report a Vulnerability - How to Contact the Juniper Networks Security
    Incident Response Team

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

Risk Level:
Medium

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."

- -------------------------------------------------------------------------------
2017-07 Security Bulletin: Junos OS: Integer signedness error in GD Graphics
Library (CVE-2016-3074)

Product Affected:
This issue affects Junos OS 12.1X46, 12.3X48, 15.1X49, 14.2, 15.1, 15.1X53,
16.1, 16.2.

Problem:

libgd is an open-source image library which is bundled with PHP version
4.3 and above. An integer signedness vulnerability exists in libgd 2.1.1
which may result in a heap overflow when processing compressed gd2 data.

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

This issue has been assigned CVE-2016-3074.

Solution:

The following software releases have been updated to resolve this specific
issue: Junos OS 12.1X46-D65 12.3X48-D40 14.2R8 15.1F7 15.1R5 15.1X49-D70
15.1X53-D47 16.1R4 16.2R2 17.1R1, and all subsequent releases.

This issue is being tracked as PR 1210797 and PR 1218092 and is visible
on the Customer Support website.

Workaround:

o Disable well known services such as J-Web, XNM-SSL, that can utilize
onboard PHP scripting

o Discontinue use of Netconf with PHP

o Discontinue use of PyEZ with PHP

In addition to the recommendations listed above, 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 device from trusted, administrative networks or hosts.

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.
    2017-08-09: Minor change on the Solution section, removing 12.3X48-D45

Related Links:

    KB16613: 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

    Report a Vulnerability - How to Contact the Juniper Networks Security
    Incident Response Team

CVSS Score:
8.1 (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Risk Level:
High

- --------------------------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.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  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:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
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
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=k8xW
-----END PGP SIGNATURE-----

« Back to bulletins