CVE-2021-31351
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An Improper Check for Unusual or Exceptional Conditions in packet processing on the MS-MPC/MS-MIC utilized by Juniper Networks Junos OS allows a malicious attacker to send a specific packet, triggering the MS-MPC/MS-MIC to reset, causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects specific versions of Juniper Networks Junos OS on MX Series: 17.3R3-S11; 17.4R2-S13; 17.4R3 prior to 17.4R3-S5; 18.1R3-S12; 18.2R2-S8, 18.2R3-S7, 18.2R3-S8; 18.3R3-S4; 18.4R3-S7; 19.1R3-S4, 19.1R3-S5; 19.2R1-S6; 19.3R3-S2; 19.4R2-S4, 19.4R2-S5; 19.4R3-S2; 20.1R2-S1; 20.2R2-S2, 20.2R2-S3, 20.2R3; 20.3R2, 20.3R2-S1; 20.4R1, 20.4R1-S1, 20.4R2; 21.1R1; This issue does not affect any version of Juniper Networks Junos OS prior to 15.1X49-D240;
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Juniper Networks | Junos OS | unspecified < 15.1 | unaffected |
| Juniper Networks | Junos OS | 17.3 < 17.3R3-S11 | unaffected |
| Juniper Networks | Junos OS | 17.4R3 < 17.4* | unaffected |
| Juniper Networks | Junos OS | 17.3R3-S11 | affected |
| Juniper Networks | Junos OS | 18.1R3-S12 | affected |
| Juniper Networks | Junos OS | 18.3R3-S4 | affected |
| Juniper Networks | Junos OS | 18.4R3-S7 | affected |
| Juniper Networks | Junos OS | 19.1R3-S4, 19.1R3-S5 | affected |
| Juniper Networks | Junos OS | 19.2R1-S6 | affected |
| Juniper Networks | Junos OS | 19.3R3-S2 | affected |
| Juniper Networks | Junos OS | 19.4R3-S2 | affected |
| Juniper Networks | Junos OS | 20.1R2-S1 | affected |
| Juniper Networks | Junos OS | 20.2R3 | affected |
| Juniper Networks | Junos OS | 20.3R2 | affected |
| Juniper Networks | Junos OS | 17.4R2-S13 < 17.4* | affected |
| Juniper Networks | Junos OS | 18.2R2-S8, 18.2R3-S7 < 18.2* | affected |
| Juniper Networks | Junos OS | 18.4R1-S8, 18.4R2-S7 < 18.4* | affected |
| Juniper Networks | Junos OS | 19.4R2-S4 < 19.4* | affected |
| Juniper Networks | Junos OS | 20.2R2-S2 < 20.2* | affected |
| Juniper Networks | Junos OS | 20.3R1-S2 < 20.3* | affected |
| Juniper Networks | Junos OS | 20.4 < 20.4R2-S1, 20.4R3 | affected |
| Juniper Networks | Junos OS | 21.1 < 21.1R1-S1, 21.1R2 | affected |
Weaknesses
- CWE-754: CWE-754 Improper Check for Unusual or Exceptional Conditions
- Denial of Service (DoS)
Workarounds
There are no viable workarounds for this issue.
ADP Enrichment
CVE Program Container
Additional References
References
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