ESB-2019.0094 - [Juniper] Juniper Junos OS: Multiple vulnerabilities 2019-01-10

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0094
         2019-01 Security Bulletin - Multiple vulnerabilities have
                         been identified in Junos
                              10 January 2019

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

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

Product:           Juniper Junos OS
Publisher:         Juniper Networks
Operating System:  Juniper
Impact/Access:     Denial of Service -- Remote/Unauthenticated
                   Reduced Security  -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-0003 CVE-2015-1283 

Reference:         ASB-2016.0120
                   ASB-2016.0103
                   ASB-2015.0073
                   ESB-2015.1959
                   ESB-2015.1957
                   ESB-2015.1954

Original Bulletin: 
   https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10902
   https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10904

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

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2019-01 Security Bulletin: Junos OS: A flowspec BGP update with a specific 
term-order causes routing protocol daemon (rpd) process to crash with a core. 
(CVE-2019-0003)

[JSA10902]
	
Product Affected:

This issue affects Junos OS 12.1X46, 12.3, 12.3X48, 14.1X53, 15.1, 15.1F, 
15.1X49, 15.1X53.

Problem:

When a specific BGP flowspec configuration is enabled and upon receipt of a 
specific matching BGP packet meeting a specific term in the flowspec 
configuration, a reachable assertion failure occurs, causing the routing 
protocol daemon (rpd) process to crash with a core file being generated.

Affected releases are Juniper Networks Junos OS:

12.1X46 versions prior to 12.1X46-D77 on SRX Series;

12.3 versions prior to 12.3R12-S10;

12.3X48 versions prior to 12.3X48-D70 on SRX Series;

14.1X53 versions prior to 14.1X53-D47 on EX2200/VC, EX3200, EX3300/VC, EX4200,

EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100;

15.1 versions prior to 15.1R3;

15.1F versions prior to 15.1F3;

15.1X49 versions prior to 15.1X49-D140 on SRX Series;

15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400.

The following maximal parent* configuration is required:
set protocols bgp group [FLOWSPEC]

and
set policy-options policy-statement
set routing-options flow term-order

Specific child* relationship configuration details vary by implementation 
which may introduce this vulnerability.

*"parent" and "child" as in a parent-child tree structure relationship within
the CLI.

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

This issue was seen during production usage.

This issue has been assigned CVE-2019-0003.

Solution:

The following software releases have been updated to resolve this specific 
issue: 12.1X46-D77, 12.3R12-S10, 12.3X48-D70, 14.1X53-D47, 15.1F3, 15.1R3, 
15.1X49-D140, 15.1X53-D59, 16.1R1 and all subsequent releases.

This issue is being tracked as PR 1116761 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:

Disable BGP flowspec.

There are no other available workarounds for this issue.

Implementation:
Software Releases, patches and updates are available at 
https://www.juniper.net/support/downloads/.

Modification History:
2019-01-09: Initial Publication.

Related Links:

KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin 
Publication Process

KB16765: In which releases are vulnerabilities fixed?

KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security 
Advisories

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

CVE-2019-0003 at cve.mitre.org

CVSS Score:

7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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."

- ---
2019-01 Security Bulletin: Junos OS: FreeBSD-SA-15:20.expat : Multiple integer
overflows in expat (libbsdxml) XML parser (CVE-2015-1283)

[JSA10904] 

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

Problem:

A numeric error vulnerability exists in the expat XML processing library of 
Juniper Networks Junos OS which allows a remote unauthenticated attacker to 
cause an Out of Memory (OoM) or buffer overflow Denial of Service (DoS) 
condition, potentially with other possible unspecified impacts, through crafted
XML data input.

Affected releases are Juniper Networks Junos OS:

12.3 versions prior to 12.3R12-S12;
12.3X48 versions prior to 12.3X48-D76, 12.3X48-D80 on SRX Series;
14.1X53 versions prior to 14.1X53-D48 on EX2200/VC, EX3200, EX3300/VC, EX4200, 
EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100;
15.1 versions prior to 15.1R5;
15.1X49 versions prior to 15.1X49-D151, 15.1X49-D160 on SRX Series;
15.1F versions prior to 15.1F6-S12;
15.1X53 versions above 15.1X53-D10 on EX2300, EX3400;
16.1 versions prior to 16.1R2.

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

Juniper SIRT is aware of a working proof of concept of this vulnerability.

This issue was discovered during an external security research.

This issue has been assigned CVE-2015-1283.

Solution:

The following software releases have been updated to resolve this specific 
issue: 12.3R12-S12, 12.3X48-D76, 12.3X48-D80, 14.1X53-D48, 15.1R5, 
15.1X49-D151, 15.1X49-D160, 15.1F6-S12,16.1R2, 16.2R1, and all subsequent 
releases.

This issue is being tracked as PR 1188681 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 viable workarounds for this issue.

To reduce the risk of exploitation customer may:

Disallow XML scripts to process from untrusted sources.

Implementation:

Software Releases, patches and updates are available at 
https://www.juniper.net/support/downloads/.

Modification History:

2019-01-09: Initial Publication.

Related Links:

KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin 
Publication Process

KB16765: In which releases are vulnerabilities fixed?

KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security 
Advisories

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

CVE-2015-1283 at cve.mitre.org

https://www.freebsd.org/security/advisories/FreeBSD-SA-15:20.expat.asc

CVSS Score:

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

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."

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