CVE-2021-31374
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Junos OS and Junos OS Evolved: RPD crash while processing a specially crafted BGP UPDATE or KEEPALIVE message.
On Juniper Networks Junos OS and Junos OS Evolved devices processing a specially crafted BGP UPDATE or KEEPALIVE message can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued receipt and processing of this message will create a sustained Denial of Service (DoS) condition. This issue affects both IBGP and EBGP deployments over IPv4 or IPv6. This issue affects: Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1; 19.4 versions prior to 19.4R1-S4, 19.4R1-S4, 19.4R2-S3, 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: 20.3 versions prior to 20.3R2-EVO.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Junos OS
- Vendor
- Juniper Networks
- Product
- Junos OS
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 17.3 | affected | custom | 17.3R3-S11 | Unavailable | None listed |
| 17.4 | affected | custom | 17.4R2-S13, 17.4R3-S4 | Unavailable | None listed |
| 18.1 | affected | custom | 18.1R3-S12 | Unavailable | None listed |
| 18.2 | affected | custom | 18.2R2-S8, 18.2R3-S7 | Unavailable | None listed |
| 18.3 | affected | custom | 18.3R3-S4 | Unavailable | None listed |
| 18.4 | affected | custom | 18.4R1-S8, 18.4R2-S7, 18.4R3-S7 | Unavailable | None listed |
| 19.1 | affected | custom | 19.1R1-S6, 19.1R2-S2, 19.1R3-S4 | Unavailable | None listed |
| 19.2 | affected | custom | 19.2R1-S6, 19.2R3-S1 | Unavailable | None listed |
| 19.3 | affected | custom | 19.3R2-S5, 19.3R3-S1 | Unavailable | None listed |
| 19.4 | affected | custom | 19.4R1-S4, 19.4R2-S3, 19.4R3-S1 | Unavailable | None listed |
| 20.1 | affected | custom | 20.1R2 | Unavailable | None listed |
| 20.2 | affected | custom | 20.2R2 | Unavailable | None listed |
| 20.3 | affected | custom | 20.3R1-S1, 20.3R2 | Unavailable | None listed |
Junos OS Evolved
- Vendor
- Juniper Networks
- Product
- Junos OS Evolved
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 20.3 | affected | custom | 20.3R2-EVO | Unavailable | None listed |