In a Point-to-Multipoint (P2MP) Label Switched Path (LSP) scenario, an uncontrolled resource consumption vulnerability in the Routing Protocol Daemon (RPD) in Juniper Networks Junos OS allows a specific SNMP request to trigger an infinite loop causing a high CPU usage Denial of Service (DoS) condition. This issue affects both SNMP over IPv4 and IPv6. This issue affects: Juniper Networks Junos OS: 12.3X48 versions prior to 12.3X48-D90; 15.1 versions prior to 15.1R7-S6; 15.1X49 versions prior to 15.1X49-D200; 15.1X53 versions prior to 15.1X53-D238, 15.1X53-D592; 16.1 versions prior to 16.1R7-S5; 16.2 versions prior to 16.2R2-S11; 17.1 versions prior to 17.1R3-S1; 17.2 versions prior to 17.2R3-S2; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R2-S4, 17.4R3; 18.1 versions prior
The following software releases have been updated to resolve this specific issue: 12.3X48-D90, 15.1X49-D200, 15.1R7-S6, 15.1X53-D238, 15.1X53-D592, 16.1R7-S5, 16.2R2-S11, 17.1R3-S1, 17.2R3-S2, 17.3R3-S7, 17.4R2-S4, 17.4R3, 18.1R3-S5, 18.2R3, 18.2X75-D50, 18.3R2, 18.4R2, 19.1R2, 19.2R1, and all subsequent releases.
If SNMP is not needed, remove SNMP from the system, otherwise, there are no available workarounds for this issue. SNMP is disabled by default. Additional steps which may reduce the risk of exploitation include: Utilizing edge filtering with source-address validation (uRPF, etc.), access control lists (ACLs), and/or SNMPv3 authentication to limit access to the device only from trusted hosts.
| Product | Vulnerable range | Fixed version | Advisory |
|---|---|---|---|
| Juniper Networks Junos OS | >=12.3X48<12.3X48-D90 | 12.3X48-D90 | advisory ↗ |
| Juniper Networks Junos OS | >=15.1<15.1R7-S6 | 15.1R7-S6 | advisory ↗ |
| Juniper Networks Junos OS | >=15.1X49<15.1X49-D200 | 15.1X49-D200 | advisory ↗ |
| Juniper Networks Junos OS | >=15.1X53<15.1X53-D238, 15.1X53-D592 | 15.1X53-D238, 15.1X53-D592 | advisory ↗ |
| Juniper Networks Junos OS | >=16.1<16.1R7-S5 | 16.1R7-S5 | advisory ↗ |
| Juniper Networks Junos OS | >=16.2<16.2R2-S11 | 16.2R2-S11 | advisory ↗ |
| Juniper Networks Junos OS | >=17.1<17.1R2-S11, 17.1R3-S1 | 17.1R2-S11, 17.1R3-S1 | advisory ↗ |
| Juniper Networks Junos OS | >=17.2<17.2R3-S2 | 17.2R3-S2 | advisory ↗ |
| Juniper Networks Junos OS | >=17.3<17.3R3-S7 | 17.3R3-S7 | advisory ↗ |
| Juniper Networks Junos OS | >=17.4<17.4R2-S4, 17.4R3 | 17.4R2-S4, 17.4R3 | advisory ↗ |
| Juniper Networks Junos OS | >=18.1<18.1R3-S5 | 18.1R3-S5 | advisory ↗ |
| Juniper Networks Junos OS | >=18.2<18.2R3 | 18.2R3 | advisory ↗ |
| Juniper Networks Junos OS | >=18.2X75<18.2X75-D50 | 18.2X75-D50 | advisory ↗ |
| Juniper Networks Junos OS | >=18.3<18.3R2 | 18.3R2 | advisory ↗ |
| Juniper Networks Junos OS | >=18.4<18.4R2 | 18.4R2 | advisory ↗ |
| Juniper Networks Junos OS | >=19.1<19.1R2 | 19.1R2 | advisory ↗ |
| Juniper Networks Junos OS | >=19.2<19.2R1 | 19.2R1 | advisory ↗ |