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

                               ESB-2020.0082
                   Junos OS: Multiple security bulletins
                              9 January 2020

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

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

Product:           Junos OS
Publisher:         Juniper Networks
Operating System:  Juniper
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated      
                   Delete Arbitrary Files          -- Existing Account            
                   Denial of Service               -- Remote/Unauthenticated      
                   Cross-site Scripting            -- Remote with User Interaction
                   Access Confidential Data        -- Existing Account            
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-1607 CVE-2020-1606 CVE-2020-1603
                   CVE-2020-1601 CVE-2020-1600 

Original Bulletin: 
   http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10979
   http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10980
   http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10982
   http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10985
   http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10986

Comment: This bulletin contains five (5) Juniper Networks security 
         advisories.

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

2020-01 Security Bulletin: Junos OS: A specific SNMP command can trigger a high
CPU usage Denial of Service in the RPD daemon. (CVE-2020-1600)

Article ID  : JSA10979
Last Updated: 08 Jan 2020
Version     : 3.0

Product Affected:
This issue affects Junos OS 12.3X48, 15.1, 15.1X49, 15.1X53, 16.1, 16.2, 17.1,
17.2, 17.3, 17.4, 18.1, 18.2, 18.2X75, 18.3, 18.4, 19.1, 19.2.
Problem:

In a Point-to-Multipoint (P2MP) Label Switched Path (LSP) scenario, an
uncontrolled resource consumption vulnerability in the Routing Protocol Daemon
(RPD) in Juniper Networks Junos OS allows a specific SNMP request to trigger an
infinite loop causing a high CPU usage Denial of Service (DoS) condition.

This issue affects both SNMP over IPv4 and IPv6.

This issue affects:

Juniper Networks Junos OS:

12.3X48 versions prior to 12.3X48-D90;
15.1 versions prior to 15.1R7-S6;
15.1X49 versions prior to 15.1X49-D200;
15.1X53 versions prior to 15.1X53-D238, 15.1X53-D592;
16.1 versions prior to 16.1R7-S5;
16.2 versions prior to 16.2R2-S11;
17.1 versions prior to 17.1R3-S1;
17.2 versions prior to 17.2R3-S2;
17.3 versions prior to 17.3R3-S7;
17.4 versions prior to 17.4R2-S4, 17.4R3;
18.1 versions prior to 18.1R3-S5;
18.2 versions prior to 18.2R3;
18.2X75 versions prior to 18.2X75-D50;
18.3 versions prior to 18.3R2;
18.4 versions prior to 18.4R1-S6, 18.4R2;
19.1 versions prior to 19.1R2.

The following minimal configuration is required. The community "public" is
minimal; other communities are impacted as well.

[snmp community public]
[logical-systems logical-system-name protocols mpls label-switched-path
lsp-name]
[protocols mpls label-switched-path]

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-2020-1600 .

Solution:

The following software releases have been updated to resolve this specific
issue: 12.3X48-D90, 15.1R7-S6, 15.1X49-D200, 15.1X53-D238, 15.1X53-D592,
16.1R7-S5, 16.2R2-S11, 17.1R3-S1, 17.2R3-S2, 17.3R3-S7, 17.4R2-S4, 17.4R3,
18.1R3-S5, 18.2R3, 18.2X75-D50, 18.3R2, 18.4R1-S6, 18.4R2, 19.1R2, 19.2R1, and
all subsequent releases.

This issue is being tracked as 1402185 .

Workaround:

If SNMP is not needed, remove SNMP from the system, otherwise, there are no
available workarounds for this issue. SNMP is disabled by default.

Additional steps which may reduce the risk of exploitation include:

Utilizing edge filtering with source-address validation (uRPF, etc.), access
control lists (ACLs), and/or SNMPv3 authentication to limit access to the
device only from trusted hosts.

Implementation:
Software Releases, patches and updates are available at https://www.juniper.net
/support/downloads/ .
Modification History:
2020-01-08: Initial Publication.
CVSS Score:
6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
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."

- --------------------------------------------------------------------------------

2020-01 Security Bulletin: Junos OS: Upon receipt of certain types of malformed
PCEP packets the pccd process may crash. (CVE-2020-1601)

Article ID  : JSA10980
Last Updated: 08 Jan 2020
Version     : 2.0

Product Affected:
This issue affects Junos OS 15.1, 15.1X49, 15.1X53, 16.1, 16.2, 17.1, 17.2,
17.3, 17.4, 18.1, 18.2, 18.2X75, 18.3, 18.4.
Problem:

Certain types of malformed Path Computation Element Protocol (PCEP) packets
when received and processed by a Juniper Networks Junos OS device serving as a
Path Computation Client (PCC) in a PCEP environment using Juniper's path
computational element protocol daemon (pccd) process allows an attacker to
cause the pccd process to crash and generate a core file thereby causing a
Denial of Service (DoS).

Continued receipt of this family of malformed PCEP packets will cause an
extended Denial of Service (DoS) condition.

This issue affects:

Juniper Networks Junos OS:

15.1 versions prior to 15.1F6-S13, 15.1R7-S4;
15.1X49 versions prior to 15.1X49-D180 on SRX Series;
15.1X53 versions prior to 15.1X53-D238, 15.1X53-D496, 15.1X53-D592;
16.1 versions prior to 16.1R7-S4;
16.2 versions prior to 16.2R2-S9;
17.1 versions prior to 17.1R2-S11, 17.1R3;
17.2 versions prior to 17.2R1-S9;
17.2 version 17.2R2 and later prior to 17.2R3-S2;
17.3 versions prior to 17.3R3-S3;
17.4 versions prior to 17.4R2-S2, 17.4R3;
18.1 versions prior to 18.1R3-S2;
18.2 versions prior to 18.2R2-S6, 18.2R3;
18.2X75 versions prior to 18.2X75-D40;
18.3 versions prior to 18.3R2;
18.4 versions prior to 18.4R1-S2, 18.4R2.

This issue does not affect releases of Junos OS prior to 15.1R1.

The following minimal configuration is required:

[protocols pcep pce pce-id destination-ipv4-address ipv4-address]

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-2020-1601 .

Solution:

The following software releases have been updated to resolve this specific
issue: 15.1F6-S13, 15.1R7-S4, 15.1X49-D180, 15.1X53-D238, 15.1X53-D496,
15.1X53-D592, 16.1R7-S4, 16.2R2-S9, 17.1R2-S11, 17.1R3, 17.2R1-S9, 17.2R3-S2,
17.3R3-S3, 17.4R2-S2, 17.4R2-S4, 17.4R3, 18.1R3-S2, 18.2R2-S6, 18.2R3,
18.2X75-D40, 18.3R2, 18.4R1-S2, 18.4R2, 19.1R1, and all subsequent releases.

This issue is being tracked as 1395205 .

Workaround:
There are no viable workarounds for this issue.
Implementation:
Software Releases, patches and updates are available at https://www.juniper.net
/support/downloads/ .
Modification History:
2020-01-08: Initial Publication.
CVSS Score:
5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
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."

- --------------------------------------------------------------------------------

2020-01 Security Bulletin: Junos OS: Improper handling of specific IPv6 packets
sent by clients may cause client devices IPv6 traffic to be black holed, and
eventually kernel crash (vmcore) the device. (CVE-2020-1603)

Article ID  : JSA10982
Last Updated: 08 Jan 2020
Version     : 5.0

Product Affected:
This issue affects Junos OS 16.1, 16.2, 17.1, 17.2, 17.3, 17.4, 18.1, 18.2,
18.2X75, 18.3, 18.4, 19.1, 19.2.
Problem:

Improper handling of specific IPv6 packets sent by clients may cause client
devices IPv6 traffic to be black holed. Additionally, these specific IPv6
packets improperly attempt to egress the RE and cause a memory leak to occur
within the Juniper Networks Junos OS device. This memory leak eventually leads
to a kernel crash (vmcore) creating a Denial of Service (DoS) condition.

Continued receipt and attempted egress of these specific IPv6 packets from the
Routing Engine (RE) will create an extended Denial of Service condition.

This issue affects:

Juniper Networks Junos OS

16.1 versions prior to 16.1R7-S6;
16.1 version 16.1X70-D10 and later;
16.2 versions prior to 16.2R2-S11;
17.1 versions prior to 17.1R2-S11, 17.1R3-S1;
17.2 versions prior to 17.2R1-S9, 17.2R2-S8, 17.2R3-S3;
17.3 versions prior to 17.3R3-S6;
17.4 versions prior to 17.4R2-S9, 17.4R3;
18.1 versions prior to 18.1R3-S7;
18.2 versions prior to 18.2R3-S2;
18.2X75 versions prior to 18.2X75-D50, 18.2X75-D410;
18.3 versions prior to 18.3R1-S6, 18.3R2-S2, 18.3R3;
18.4 versions prior to 18.4R2-S2, 18.4R3;
19.1 versions prior to 19.1R1-S3, 19.1R2;
19.2 versions prior to 19.2R1-S2, 19.2R2.

This issue does not affect releases prior to Junos OS 16.1R1.

This issue may occur when an interface is configured with IPv6.

For example:

[interfaces fe-1/2/0 unit 1 family inet6 address 2001:db8:0:1::/64]

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-2020-1603 .

Solution:

The following software releases have been updated to resolve this specific
issue: 16.1R7-S6, 16.2R2-S11, 17.1R2-S11, 17.1R3-S1, 17.2R1-S9, 17.2R2-S8,
17.2R3-S3, 17.3R3-S6, 17.4R2-S5, 17.3R2-S6, 17.4R3, 18.1R3-S7, 18.2R3-S2,
18.2X75-D50, 18.2X75-D410, 18.3R1-S6, 18.3R2-S2, 18.3R3, 18.4R2-S2, 18.4R3,
19.1R1-S3, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R1, and all subsequent releases.

This issue is being tracked as 1443576 .

Workaround:

Remove 'family inet6' from interfaces. Otherwise, there are no available
workarounds for this issue.

You may issue the follow command from time to time to determine if your mbufs
are climbing or are being released by reviewing across two separate times.

The required privilege level to run the command is: view.

show system buffers
Implementation:
Software Releases, patches and updates are available at https://www.juniper.net
/support/downloads/ .
Modification History:
2020-01-08: Initial Publication.
CVSS Score:
8.6 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
Severity Level:
High
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."

- --------------------------------------------------------------------------------

2020-01 Security Bulletin: Junos OS: Path traversal vulnerability in J-Web
(CVE-2020-1606)

Article ID  : JSA10985
Last Updated: 08 Jan 2020
Version     : 4.0

Product Affected:
This issue affects Junos OS 12.3, 12.3X48, 14.1X53, 15.1, 15.1F6, 15.1X49,
15.1X53, 16.1, 16.2, 17.1, 17.2, 17.3, 17.4, 18.1, 18.2, 18.3, 18.4, 19.1.
Problem:

A path traversal vulnerability in the Juniper Networks Junos OS device may
allow an authenticated J-web user to read files with 'world' readable
permission and delete files with 'world' writeable permission.

This issue does not affect system files that can be accessed only by root user.

This issue affects Juniper Networks Junos OS:

12.3 versions prior to 12.3R12-S13;
12.3X48 versions prior to 12.3X48-D85 on SRX Series;
14.1X53 versions prior to 14.1X53-D51;
15.1F6 versions prior to 15.1F6-S13;
15.1 versions prior to 15.1R7-S5;
15.1X49 versions prior to 15.1X49-D180 on SRX Series;
15.1X53 versions prior to 15.1X53-D238 on QFX5200/QFX5110 Series;
16.1 versions prior to 16.1R4-S13, 16.1R7-S5;
16.2 versions prior to 16.2R2-S10;
17.1 versions prior to 17.1R3-S1;
17.2 versions prior to 17.2R1-S9, 17.2R3-S2;
17.3 versions prior to 17.3R2-S5, 17.3R3-S5;
17.4 versions prior to 17.4R2-S9, 17.4R3;
18.1 versions prior to 18.1R3-S8;
18.2 versions prior to 18.2R3;
18.3 versions prior to 18.3R2-S3, 18.3R3;
18.4 versions prior to 18.4R2;
19.1 versions prior to 19.1R1-S4, 19.1R2.

This issue requires J-Web to be enabled on the device.

The examples of the config stanza affected by this issue:

[system services web-management http]
[system services web-management https]

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

This issue was discovered during an external security research.

This issue has been assigned CVE-2020-1606 .

Solution:

The following software releases have been updated to resolve this specific
issue: 12.3R12-S13, 12.3X48-D85, 14.1X53-D51, 15.1F6-S13, 15.1R7-S5,
15.1X49-D180, 15.1X53-D238, 16.1R4-S13, 16.1R7-S5, 16.2R2-S10, 17.1R3-S1,
17.2R1-S9, 17.2R3-S2, 17.3R2-S5, 17.3R3-S5, 17.4R2-S9, 17.4R3, 18.1R3-S8,
18.2R3, 18.3R2-S3, 18.3R3, 18.4R2, 19.1R1-S4, 19.1R2, 19.2R1, and all
subsequent releases.

This issue is being tracked as 1431298 .

Workaround:

Limit access to the J-Web interface to only trusted users to reduce risks of
exploitation of this vulnerability.

Implementation:
Software Releases, patches and updates are available at https://www.juniper.net
/support/downloads/ .
Modification History:
2020-01-08: Initial Publication.
CVSS Score:
5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)
Severity Level:
Medium
Acknowledgements:
The Juniper SIRT would like to would like to acknowledge and thank Toshitsugu
Yoneyama of Mitsui Bussan Secure Directions, Inc. for finding and reporting
this issue.

- --------------------------------------------------------------------------------

2020-01 Security Bulletin: Junos OS: Cross-Site Scripting (XSS) in J-Web 
(CVE-2020-1607)

Article ID  : JSA10986
Last Updated: 08 Jan 2020
Version     : 3.0

Product Affected:
This issue affects Junos OS 12.3, 12.3X48, 14.1X53, 15.1, 15.1F6, 15.1X49,
15.1X53, 16.1, 16.2, 17.1, 17.2, 17.3, 17.4, 18.1, 18.2, 18.3, 18.4, 19.1.
Problem:

Insufficient Cross-Site Scripting (XSS) protection in J-Web may potentially
allow a remote attacker to inject web script or HTML, hijack the target user's
J-Web session and perform administrative actions on the Junos device as the
targeted user.

This issue affects Juniper Networks Junos OS

12.3 versions prior to 12.3R12-S15;
12.3X48 versions prior to 12.3X48-D86, 12.3X48-D90 on SRX Series;
14.1X53 versions prior to 14.1X53-D51 on EX and QFX Series;
15.1F6 versions prior to 15.1F6-S13;
15.1 versions prior to 15.1R7-S5;
15.1X49 versions prior to 15.1X49-D181, 15.1X49-D190 on SRX Series;
15.1X53 versions prior to 15.1X53-D238 on QFX5200/QFX5110 Series;
15.1X53 versions prior to 15.1X53-D592 on EX2300/EX3400 Series;
16.1 versions prior to 16.1R4-S13, 16.1R7-S5;
16.2 versions prior to 16.2R2-S10;
17.1 versions prior to 17.1R2-S11, 17.1R3-S1;
17.2 versions prior to 17.2R1-S9, 17.2R3-S2;
17.3 versions prior to 17.3R2-S5, 17.3R3-S5;
17.4 versions prior to 17.4R2-S6, 17.4R3;
18.1 versions prior to 18.1R3-S7;
18.2 versions prior to 18.2R2-S5, 18.2R3;
18.3 versions prior to 18.3R1-S6, 18.3R2-S1, 18.3R3;
18.4 versions prior to 18.4R1-S5, 18.4R2;
19.1 versions prior to 19.1R1-S2, 19.1R2.

This issue requires J-Web to be enabled on the device.

The examples of the config stanza affected by this issue:

system services web-management http
system services web-management https

This issue was discovered during an external security research.

This issue has been assigned CVE-2020-1607 .

Solution:

The following software releases have been updated to resolve this specific
issue: 12.3R12-S15, 12.3X48-D86, 12.3X48-D90, 14.1X53-D51,
15.1F6-S13,15.1R7-S5, 15.1X49-D181, 15.1X49-D190, 15.1X53-D238, 15.1X53-D592,
16.1R4-S13, 16.1R7-S5, 16.2R2-S10,17.1R2-S11, 17.1R3-S1, 17.2R1-S9, 17.2R3-S2,
17.3R2-S5, 17.3R3-S5, 17.4R2-S6, 17.4R3, 18.1R3-S7,18.2R2-S5, 18.2R3,
18.3R1-S6, 18.3R2-S1, 18.3R3, 18.4R1-S5, 18.4R2, 19.1R1-S2, 19.1R2, 19.2R1, and
all subsequent releases.

This issue is being tracked as 1434553 .

Workaround:

Access the J-Web service from trusted hosts which may not be compromised by
cross-site scripting attacks, for example, deploying jump hosts with no
internet access.

Alternatively, disable J-Web.

Implementation:
Software Releases, patches and updates are available at https://www.juniper.net
/support/downloads/ .
Modification History:
2020-01-08: Initial Publication.
CVSS Score:
7.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
Severity Level:
High
Acknowledgements:
The Juniper SIRT would like to would like to acknowledge and thank Toshitsugu
Yoneyama of Mitsui Bussan Secure Directions, Inc. for finding and reporting
this issue.

- --------------------------END INCLUDED TEXT--------------------

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