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AUSCERT External Security Bulletin Redistribution
ESB-2017.0089
Multiple vulnerabilities have been identified in JunOS
12 January 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Juniper Junos
Publisher: Juniper Networks
Operating System: Juniper
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-2303 CVE-2017-2302 CVE-2017-2301
Original Bulletin:
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10769
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10771
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10772
Comment: This bulletin contains three (3) Juniper Networks security
advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
2017-01 Security Bulletin: Junos: Denial of service vulnerability in jdhcpd
due to crafted DHCPv6 packets (CVE-2017-2301)
Security Advisories ID: JSA10769
Last Updated: 11 Jan 2017
Version: 1.0
Product Affected:
This issue can affect any product or platform running Junos OS with
DHCPv6 enabled
Problem:
The Junos OS jdhcpd daemon provides advanced DHCP services to subscribers
on all major hardware platforms, including MX/vMX Series, SRX Series,
EX Series, QFX Series, and ACX Series. An issue was discovered that can
cause jdhcpd to crash and restart when a crafted DHCPv6 packet is received
from a subscriber. Repeated crashes of the jdhcpd process may constitute an
extended denial of service condition for subscribers attempting to obtain
IPv6 addresses.
This issue only affects devices configured for DHCP services via IPv6 with
either Server or Relay enabled. IPv4 is not vulnerable to this issue.
Juniper SIRT is not aware of any malicious exploitation of this
vulnerability.
No other Juniper Networks products or platforms are affected by this issue.
This issue has been assigned CVE-2017-2301.
Solution:
The following software releases have been updated to resolve this
specific issue: Junos OS 11.4R13-S3, 12.1X46-D60, 12.3R12-S2, 12.3R13,
12.3X48-D40, 13.2X51-D40, 13.3R10, 14.1R8, 14.1X53-D12, 14.1X53-D35,
14.1X55-D35, 14.2R7, 15.1F6, 15.1R3, 15.1X49-D60, 15.1X53-D30, 16.1R1,
and all subsequent releases.
This issue is being tracked as PR 1137586 and is visible on the Customer
Support website.
KB16765 - "In which releases are vulnerabilities fixed?" describes which
release vulnerabilities are fixed as per our End of Engineering and End
of Life support policies.
Workaround:
No known workaround exists for this issue.
Implementation:
How to obtain fixed software:
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:
2017-01-11: 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 Vulnerability - How to Contact the Juniper Networks Security
Incident Response Team
CVE-2017-2301: Denial of service vulnerability in jdhcpd due to crafted
DHCPv6 packets
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."
- ---
2017-01 Security Bulletin: Junos: Denial of Service vulnerability in RPD
(CVE-2017-2302)
Security Advisories ID: JSA10771
Last Updated: 11 Jan 2017
Version: 1.0
Product Affected:
This issue can affect any product or platform running Junos OS.
Problem:
On Junos OS devices where the BGP add-path feature is enabled with 'send'
option or with both 'send' and 'receive' options, a network based attacker
can cause the Junos OS rpd daemon to crash and restart. Repeated crashes
of the rpd daemon can result in an extended denial of service condition.
Junos OS devices that do not have the BGP add-path feature enabled are
not affected by this issue.
Junos OS devices that only have the 'receive' option with BGP add-path
feature enabled are not affected by this issue.
Juniper SIRT is not aware of any malicious exploitation of this
vulnerability.
No other Juniper Networks products or platforms are affected by this issue.
This issue has been assigned CVE-2017-2302.
Solution:
The following software releases have been updated to resolve this specific
issue: Junos OS 12.1X46-D55, 12.1X47-D45, 12.3R13, 12.3X48-D35, 13.3R10,
14.1R8, 14.1X53-D40, 14.1X55-D35, 14.2R6, 15.1R1, 15.1X49-D20 and all
subsequent releases.
This issue is being tracked as PR 1027048 and is visible on the Customer
Support website.
KB16765 - "In which releases are vulnerabilities fixed?" describes which
release vulnerabilities are fixed as per our End of Engineering and End
of Life support policies.
Workaround:
Disabling the BGP add-path feature completely, or disabling the 'send'
option of BGP add-path will prevent the issue from occurring.
If BGP add-path feature is required then there are no known workarounds
that can avoid the rpd crash.
Implementation:
How to obtain fixed software:
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:
2017-01-11: Initial release.
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-2017-2302: Junos Denial of Service vulnerability in RPD
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."
- --
2017-01 Security Bulletin: Junos: RPD crash while processing RIP
advertisements (CVE-2017-2303)
Security Advisories ID: JSA10772
Last Updated: 11 Jan 2017
Version: 2.0
Product Affected:
This issue can affect any product or platform running Junos OS where RIP
is enabled.
Problem:
Certain RIP advertisements received by the router may cause the RPD daemon
to crash. While the RPD daemon restarts after a crash, repeated crashes
of RPD daemon can result in an extended denial of service condition.
This issue only affects devices where RIP is enabled.
Juniper SIRT is not aware of any malicious exploitation of this
vulnerability.
No other Juniper Networks products or platforms are affected by this issue.
This issue has been assigned CVE-2017-2303.
Solution:
The following software releases have been updated to resolve this specific
issue: Junos OS 12.1X46-D50, 12.1X47-D40, 12.3R13, 12.3X48-D30, 13.2X51-D40,
13.3R10, 14.1R8, 14.1X53-D35, 14.1X55-D35, 14.2R5, 15.1F6, 15.1R3,
15.1X49-D30, 15.1X49-D40, 15.1X53-D35, 16.1R1, and all subsequent releases.
This issue is being tracked as PR 1129202 and is visible on the Customer
Support website.
KB16765 - "In which releases are vulnerabilities fixed?" describes which
release vulnerabilities are fixed as per our End of Engineering and End
of Life support policies.
Workaround:
There are no known workarounds than can prevent this issue.
It is a 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:
2017-01-11: Initial release.
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-2017-2303: Junos RPD crash while handling RIP advertisements
CVSS Score:
5.9 (CVSS:3.0/AV:N/AC:H/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."
Acknowledgements:
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