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AUSCERT External Security Bulletin Redistribution
ESB-2015.1801
Multiple vulnerabilities have been identified in Juniper Junos OS
9 July 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Junos OS
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-2015-5362 CVE-2015-5360 CVE-2015-5359
Original Bulletin:
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10687
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10688
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10690
Comment: This bulletin contains three (3) Juniper Networks security
advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
2015-07 Security Bulletin: Junos: RPD crash after change of local-preference
on IBGP peer (CVE-2015-5359)
[JSA10687]
PRODUCT AFFECTED:
This issue can affect any product or platform running Junos OS with IBGP and
VPLS configured.
PROBLEM:
Upon receipt of a large set of label blocks containing an updated BGP local
preference (due to configuration changes on IBGP peers), RPD may crash with a
NULL pointer access exception. The crash was triggered by a large number of
BGP-VPLS advertisements with updated BGP local preference values.
Note that this issue can only be triggered from inside a customer's network.
MPLS labels are not usually exchanged outside the protected network, and are
usually only received from a PE or RR in the same network.
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-2015-5359.
SOLUTION:
The following software releases have been updated to resolve this specific
issue: Junos OS 12.1X44-D50, 12.1X46-D35, 12.1X47-D25, 12.3R9, 12.3X48-D10,
13.2R7, 13.3R5, 14.1R3-S2, 14.1R4, 14.2R2, 15.1R1, and all subsequent
releases.
This issue is being tracked as PR 1047437 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:
Avoid bulk modification of local-preference or limit major BGP configuration
changes to a maintenance window.
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:
2015-07-08: 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-2015-5359: RPD crash after change of local-preference on IBGP peer
CVSS SCORE:
CVSSv2: 7.1 (AV:N/AC:M/Au:N/C:N/I:N/A:C)
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."
ACKNOWLEDGEMENTS:
- -------------------------------------------------------------------------
2015-07 Security Bulletin: Junos: IPv6 sendd denial of service due to crafted
packet (CVE-2015-5360)
[JSA10688]
PRODUCT AFFECTED:
This issue can affect any product or platform running Junos OS.
PROBLEM:
A vulnerability in processing Secure Neighbor Discovery (SEND) Protocol
packets can result in a high CPU consumption denial of service condition on
Junos devices. The issue can occur only when the Secure Neighbor Discovery
feature has been configured via the 'set protocols neighbor-discovery secure
security-level default' option.
This issue was discovered by an external security researcher.
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-2015-5360.
SOLUTION:
The following software releases have been updated to resolve this specific
issue: Junos OS 12.1X44-D51, 12.1X46-D36, 12.1X46-D40, 12.1X47-D25, 12.3R10,
12.3X48-D20, 13.2R8, 13.3R6, 14.1R5, 14.2R3, 15.1R1, 15.1X49-D20, and all
subsequent releases.
This issue is being tracked as PR 1055018 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:
If Secure Neighbor Discovery is not required, disabling 'neighbor-discovery
secure' within the 'protocols' configuration hierarchy will mitigate 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:
2015-07-08: 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-2015-5360: IPv6 sendd denial of service due to crafted packet
CVSS SCORE:
CVSSv2: 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
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:
The Juniper SIRT would like to acknowledge and thank Daniel Edwards of
Microsoft Corporation for responsibly reporting this vulnerability.
- ----------------------------------------------------------------------------
2015-07 Security Bulletin: Junos: BFD daemon crash upon receipt of crafted BFD
packet (CVE-2015-5362)
[JSA10690]
PRODUCT AFFECTED:
This issue can affect any product or platform running Junos OS.
PROBLEM:
Receipt of a specially crafted BFD packet can cause the BFD daemon (bfdd) to
crash and restart, generating a bfdd core file. Continuous receipt of crafted
BFD packets could result in an extended BFD outage, or in extreme cases could
lead to remote code execution.
The issue can affect all configurations and topologies utilizing BFD
including: single-hop and multi-hop BFD, centralized and distributed mode BFD,
micro-BFD and LSP BFD.
Note that the bfdd crash can be triggered by a crafted BFD packet even if BFD
is not enabled on the interface. See Workaround section below for instructions
to disable BFD globally.
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-2015-5362.
SOLUTION:
The following software releases have been updated to resolve this specific
issue: Junos OS 12.1X44-D50, 12.1X46-D35, 12.1X47-D25, 12.3R10, 12.3X48-D15,
13.2R8, 13.3R6, 14.1R5, 14.1X50-D85, 14.1X55-D20, 14.2R3, 15.1R1, 15.1X49-D10,
and all subsequent releases.
This issue is being tracked as PR 1004482 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:
Use access lists or firewall filters on input interfaces or the control plane
(lo0) to limit access to the router via BFD only from trusted hosts.
If BFD is not used at all, the BFD daemon (bfdd) can be disabled via the
following configuration change:
'set system processes neighbor-liveness disable'
Additionally, according to Section 6 of RFC 5883: " multihop paths expose BFD
to spoofing. As the number of hops increases, the exposure to attack grows. As
such, implementations of BFD should utilize cryptographic authentication over
multihop paths to help mitigate denial-of-service attacks."
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:
2015-07-08: 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-2015-5362: BFD daemon crash upon receipt of crafted BFD packet
CVSS SCORE:
CVSSv2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)
RISK LEVEL:
Critical
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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