On all vSRX and SRX Series devices, when the DHCP or DHCP relay is configured, specially crafted packet might cause the flowd process to crash, halting or interrupting traffic from flowing through the device(s).
Repeated crashes of the flowd process may constitute an extended denial of service condition for the device(s).
If the device is configured in high-availability, the RG1+ (data-plane) will fail-over to the secondary node.
If the device is configured in stand-alone, there will be temporary traffic interruption until the flowd process is restored automatically.
Sustained crafted packets may cause the secondary failover node to fail back, or fail completely, potentially halting flowd on both nodes of the cluster or causing flip-flop failovers to occur.
No other Juniper Networks products or platforms are affected by this issue.
This issue only affects devices with DHCP or DHCP relay is configured.
Juniper SIRT is not aware of any malicious exploitation of this vulnerability, however, the issue has been seen in a production network.
This issue has been assigned CVE-2017-10605 .
The following software releases have been updated to resolve this specific issue: Junos OS 12.1x46-D67, 12.3X48-D50, 15.1X49-D91, 15.1X49-D100 and all subsequent releases. This issue is being tracked as PR 1270493 and is visible on the Customer Support website. 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.
No published workaround exists for this issue.