When an MX Series Broadband Remote Access Server (BRAS) is configured as a Broadband Network Gateway (BNG) with DHCPv6 enabled, jdhcpd might crash when receiving a specific crafted DHCP response message on a subscriber interface. The daemon automatically restarts without intervention, but continuous receipt of specific crafted DHCP messages will repeatedly crash jdhcpd, leading to an extended Denial of Service (DoS) condition. This issue only affects systems configured with DHCPv6 enabled. DHCPv4 is unaffected by this issue. This issue affects Juniper Networks Junos OS: 15.1 versions before 15.1R7-S5 on MX Series; 16.1 versions before 16.1R7-S5 on MX Series; 16.2 versions before 16.2R2-S10 on MX Series; 17.1 versions before 17.1R3-S1 on MX Series; 17.2 versions before 17.2R3-S2 on MX Series; 17.3 versions before 17.3R3-S6 on MX Series; 17.4 versions before 17.4R2-S5, 17.4R3 on MX Series; 18.1 versions before 18.1R3-S6 on MX Series; 18.2 versions before 18.2R2-S4, 18.2R3 on MX Series; 18.2X75 versions before 18.2X75-D50 on MX Series; 18.3 versions before 18.3R1-S5, 18.3R3 on MX Series; 18.4 versions before 18.4R2 on MX Series; 19.1 versions before 19.1R1-S2, 19.1R2 on MX Series.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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juniper junos 15.1 |
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juniper junos 16.1 |
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juniper junos 16.2 |
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juniper junos 17.1 |
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juniper junos 17.2 |
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juniper junos 17.3 |
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juniper junos 17.4 |
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juniper junos 18.1 |
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juniper junos 18.2 |
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juniper junos 18.2x75 |
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juniper junos 18.3 |
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juniper junos 18.4 |
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juniper junos 19.1 |
Vulmon