Junos: SRX Series denial of service vulnerability in flowd due to crafted DHCP packet

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. Affected releases are Juniper Networks Junos OS 12.1X46 prior to 12.1X46-D67 on vSRX or SRX Series; 12.3X48 prior to 12.3X48-D50 on vSRX or SRX Series; 15.1X49 prior to 15.1X49-D91, 15.1X49-D100 on vSRX or SRX Series.

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Juniper vSRX和SRX Series设备Junos OS 输入验证漏洞

Juniper vSRX和SRX都是美国瞻博网络（Juniper Networks）公司的产品。vSRX是一款防火墙模拟器。SRX是一款防火墙设备。Junos OS是其中的一套操作系统。DHCP是其中的一个动态主机配置协议。 带有DHCP或DHCP relay配置的Juniper vSRX和SRX Series设备上的Junos OS 12.1X46版本、12.3X48版本和15.1X49版本存在安全漏洞。远程攻击者可通过发送特制的数据包利用该漏洞造成拒绝服务（flowd进程崩溃）。

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