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 prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R1-S8, 18.4R3-S8; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R2.
References
| Link | Resource |
|---|---|
| https://kb.juniper.net/JSA11119 | Vendor Advisory |
| https://kb.juniper.net/JSA11119 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
21 Nov 2024, 05:42
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://kb.juniper.net/JSA11119 - Vendor Advisory |
23 Jul 2021, 19:04
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : 3.3
v3 : 6.5 |
Information
Published : 2021-04-22 20:15
Updated : 2024-11-21 05:42
NVD link : CVE-2021-0224
Mitre link : CVE-2021-0224
CVE.ORG link : CVE-2021-0224
JSON object : View
Products Affected
juniper
- junos
CWE
CWE-770
Allocation of Resources Without Limits or Throttling