​A malicious attacker can cause a denial of service to the vSRX PFE daemon by issuing a specific connection request to the vSRX host-OS.

This issue is assigned CVE-2015-7749

The following software releases have been updated to resolve this specific issue: Junos OS 15.1X49-D20, and all subsequent vSRX-Series releases.

This issue is being tracked as PR 1085900 and is visible on the Customer Support website.
This issue was found during internal product security testing.

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

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

KB16765 [juniper.net] - "In which releases are vulnerabilities fixed?" describes which release vulnerabilities are fixed as per our End of Engineering and End of Life support policies.​​

​Protect the vSRX Series services gateway host-OS from unauthorized access by limiting the exploitable attack surface by implementing access lists or firewall filters from trusted, administrative networks or hosts.

2015-10-14: Initial publication

• ​KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• CVE-2015-7749: A remote attacker can cause a persistent denial of service to the vSRX through a specific connection request to the firewall's host-OS.