CVE-2021-0214
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: Denial of Service in ppmd upon receipt of malformed packet
A vulnerability in the distributed or centralized periodic packet management daemon (PPMD) of Juniper Networks Junos OS may cause receipt of a malformed packet to crash and restart the PPMD process, leading to network destabilization, service interruption, and a Denial of Service (DoS) condition. Continued receipt and processing of these malformed packets will repeatedly crash the PPMD process and sustain the Denial of Service (DoS) condition. Due to the nature of the specifically crafted packet, exploitation of this issue requires direct, adjacent connectivity to the vulnerable component. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S12, 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-S6; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S5, 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S2, 20.2R2.
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-S12, 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-S6 | 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-S5, 19.2R3-S1 | Unavailable | None listed |
| 19.3 | affected | custom | 19.3R2-S5, 19.3R3-S1 | Unavailable | None listed |
| 19.4 | affected | custom | 19.4R2-S2, 19.4R3 | Unavailable | None listed |
| 20.1 | affected | custom | 20.1R2 | Unavailable | None listed |
| 20.2 | affected | custom | 20.2R1-S2, 20.2R2 | Unavailable | None listed |