Executive Summary
Informations | |||
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Name | CVE-2021-0221 | First vendor Publication | 2021-01-15 |
Vendor | Cve | Last vendor Modification | 2021-02-05 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | |||
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Overall CVSS Score | 6.5 | ||
Base Score | 6.5 | Environmental Score | 6.5 |
impact SubScore | 3.6 | Temporal Score | 6.5 |
Exploitabality Sub Score | 2.8 | ||
Attack Vector | Adjacent | Attack Complexity | Low |
Privileges Required | None | User Interaction | None |
Scope | Unchanged | Confidentiality Impact | None |
Integrity Impact | None | Availability Impact | High |
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:A/AC:M/Au:N/C:N/I:N/A:P) | |||
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Cvss Base Score | 2.9 | Attack Range | Adjacent network |
Cvss Impact Score | 2.9 | Attack Complexity | Medium |
Cvss Expoit Score | 5.5 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
In an EVPN/VXLAN scenario, if an IRB interface with a virtual gateway address (VGA) is configured on a PE, a traffic loop may occur upon receipt of specific IP multicast traffic. The traffic loop will cause interface traffic to increase abnormally, ultimately leading to a Denial of Service (DoS) in packet processing. The following command could be used to monitor the interface traffic: user@junos> monitor interface traffic Interface Link Input packets (pps) Output packets (pps) et-0/0/1 Up 6492089274364 (70994959) 6492089235319 (70994956) et-0/0/25 Up 343458103 (1) 156844 (0) ae0 Up 9132519197257 (70994959) 9132519139454 (70994956) This issue affects Juniper Networks Junos OS on QFX Series: all versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3; 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. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0221 |
CPE : Common Platform Enumeration
Sources (Detail)
Source | Url |
---|---|
CONFIRM | https://kb.juniper.net/JSA11111 |
Alert History
Date | Informations |
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2021-06-24 12:38:53 |
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2021-05-04 14:07:02 |
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2021-04-22 03:11:37 |
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2021-02-06 01:33:34 |
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2021-02-06 01:33:14 |
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2021-02-05 21:23:26 |
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2021-01-28 21:23:33 |
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2021-01-16 01:33:03 |
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2021-01-16 01:32:50 |
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2021-01-16 00:22:54 |
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2021-01-15 21:23:27 |
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