CVE-2021-31365
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: EX2300, EX3400 and EX4300 Series: An Aggregated Ethernet (AE) interface will go down due to a stream of specific layer 2 frames
An Uncontrolled Resource Consumption vulnerability in Juniper Networks Junos OS on EX2300, EX3400 and EX4300 Series platforms allows an adjacent attacker sending a stream of layer 2 frames will trigger an Aggregated Ethernet (AE) interface to go down and thereby causing a Denial of Service (DoS). By continuously sending a stream of specific layer 2 frames an attacker will sustain the Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS EX4300 Series All versions prior to 15.1R7-S7; 16.1 versions prior to 16.1R7-S8; 17.1 versions prior to 17.1R2-S12; 17.2 versions prior to 17.2R3-S4; 17.3 versions prior to 17.3R3-S8; 17.4 versions prior to 17.4R2-S10, 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R2-S7, 18.2R3-S3; 18.3 versions prior to 18.3R2-S4, 18.3R3-S2; 18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S1; 19.1 versions prior to 19.1R1-S5, 19.1R2-S1, 19.1R3; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S2, 19.3R3; 19.4 versions prior to 19.4R1-S2, 19.4R2. Juniper Networks Junos OS EX3400 and EX4300-MP Series All versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S9, 18.4R3-S7; 19.1 versions prior to 19.1R2-S3, 19.1R3-S4; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. Juniper Networks Junos OS EX2300 Series All versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S9, 18.4R3-S9; 19.1 versions prior to 19.1R2-S3, 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S7, 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R2.
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
- EX4300 Series
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| unspecified | affected | custom | 15.1R7-S7 | Unavailable | None listed |
| 16.1 | affected | custom | 16.1R7-S8 | Unavailable | None listed |
| 17.1 | affected | custom | 17.1R2-S12 | Unavailable | None listed |
| 17.2 | affected | custom | 17.2R3-S4 | Unavailable | None listed |
| 17.3 | affected | custom | 17.3R3-S8 | Unavailable | None listed |
| 17.4 | affected | custom | 17.4R2-S10, 17.4R3-S2 | Unavailable | None listed |
| 18.1 | affected | custom | 18.1R3-S10 | Unavailable | None listed |
| 18.2 | affected | custom | 18.2R2-S7, 18.2R3-S3 | Unavailable | None listed |
| 18.3 | affected | custom | 18.3R2-S4, 18.3R3-S2 | Unavailable | None listed |
| 18.4 | affected | custom | 18.4R1-S7, 18.4R2-S4, 18.4R3-S1 | Unavailable | None listed |
| 19.1 | affected | custom | 19.1R1-S5, 19.1R2-S1, 19.1R3 | Unavailable | None listed |
| 19.2 | affected | custom | 19.2R1-S5, 19.2R2 | Unavailable | None listed |
| 19.3 | affected | custom | 19.3R2-S2, 19.3R3 | Unavailable | None listed |
| 19.4 | affected | custom | 19.4R1-S2, 19.4R2 | Unavailable | None listed |
Junos OS
- Vendor
- Juniper Networks
- Product
- Junos OS
- Platforms
- EX3400 Series, EX4300-MP Series
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| unspecified | affected | custom | 18.1R3-S12 | Unavailable | None listed |
| 18.2 | affected | custom | 18.2R3-S7 | Unavailable | None listed |
| 18.3 | affected | custom | 18.3R3-S4 | Unavailable | None listed |
| 18.4 | affected | custom | 18.4R2-S9, 18.4R3-S7 | Unavailable | None listed |
| 19.1 | affected | custom | 19.1R2-S3, 19.1R3-S4 | Unavailable | None listed |
| 19.2 | affected | custom | 19.2R3-S1 | Unavailable | None listed |
| 19.3 | affected | custom | 19.3R3-S1 | Unavailable | None listed |
| 19.4 | affected | custom | 19.4R3-S1 | Unavailable | None listed |
| 20.1 | affected | custom | 20.1R3 | Unavailable | None listed |
| 20.2 | affected | custom | 20.2R3 | Unavailable | None listed |
| 20.3 | affected | custom | 20.3R2 | Unavailable | None listed |
Junos OS
- Vendor
- Juniper Networks
- Product
- Junos OS
- Platforms
- EX2300 Series
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| unspecified | affected | custom | 18.3R3-S5 | Unavailable | None listed |
| 18.4 | affected | custom | 18.4R2-S9, 18.4R3-S9 | Unavailable | None listed |
| 19.1 | affected | custom | 19.1R2-S3, 19.1R3-S6 | Unavailable | None listed |
| 19.2 | affected | custom | 19.2R1-S7, 19.2R3-S3 | Unavailable | None listed |
| 19.3 | affected | custom | 19.3R2-S7, 19.3R3-S3 | Unavailable | None listed |
| 19.4 | affected | custom | 19.4R3-S5 | Unavailable | None listed |
| 20.1 | affected | custom | 20.1R2-S2, 20.1R3-S1 | Unavailable | None listed |
| 20.2 | affected | custom | 20.2R3-S2 | Unavailable | None listed |
| 20.3 | affected | custom | 20.3R3-S1 | Unavailable | None listed |
| 20.4 | affected | custom | 20.4R2-S1, 20.4R3 | Unavailable | None listed |
| 21.1 | affected | custom | 21.1R2 | Unavailable | None listed |