A vulnerability in the handling of internal resources necessary to bring up a large number of Layer 2 broadband remote access subscriber (BRAS) nodes in Juniper Networks Junos OS can cause the Access Node Control Protocol daemon (ANCPD) to crash and restart, leading to a Denial of Service (DoS) condition. Continued processing of spoofed subscriber nodes will create a sustained Denial of Service (DoS) condition. When the number of subscribers attempting to connect exceeds the configured maximum-discovery-table-entries value, the subscriber fails to map to an internal neighbor entry, causing the ANCPD process to crash. This issue affects Juniper Networks Junos OS: All versions before 17.3R3-S12; 17.4 versions before 17.4R2-S13; 18.1 versions before 18.1R3-S13; 18.2 versions before 18.2R3-S8; 18.3 versions before 18.3R3-S5; 18.4 versions before 18.4R1-S8, 18.4R3-S8; 19.1 versions before 19.1R3-S4; 19.2 versions before 19.2R3-S2; 19.3 versions before 19.3R3-S1; 19.4 versions before 19.4R3-S1; 20.1 versions before 20.1R2; 20.2 versions before 20.2R2; 20.3 versions before 20.3R2.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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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 18.3 |
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juniper junos 18.4 |
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juniper junos 19.1 |
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juniper junos 19.2 |
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juniper junos 19.3 |
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juniper junos 19.4 |
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juniper junos 20.1 |
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juniper junos 20.2 |
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juniper junos 20.3 |
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