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2017-07 Security Bulletin: Junos: RPD crash due to malformed BGP OPEN message (CVE-2017-2314)

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Product Affected:
This issue can affect any product or platform running Junos OS with BGP enabled.
Receipt of a malformed BGP OPEN message may cause the routing protocol daemon (rpd) process to crash and restart. By continuously sending specially crafted  BGP OPEN message packets, an attacker can repetitively crash the rpd process causing prolonged denial of service.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability, however, this issue has been seen in a production network due to the BGP implementation in different vendor's device.

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

This issue has been assigned CVE-2017-2314.
The following software releases have been updated to resolve this specific issue: Junos 12.3R12-S4, 12.3R13, 12.3R3-S4, 12.3X48-D50, 13.3R10, 13.3R4-S11, 14.1R8-S3, 14.1R9, 14.1X53-D40, 14.1X55-D35, 14.2R4-S7, 14.2R6-S4, 14.2R7, 15.1F2-S11, 15.1F4-S1-J1, 15.1F5-S3, 15.1F6, 15.1R4, 15.1X49-D100, 15.1X53-D33, 15.1X53-D50, 16.1R1, 16.2R1 and all subsequent releases.

This issue is being tracked as PR 1159781 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.
While there is no workaround, the risk associated with this issue can be mitigated by limiting BGP sessions only from trusted peers.
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:
  • 2017-07-12: Initial Publication.


Related Links:
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:
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."