Vulnerability-Lookup

VAR-202004-2197

Vulnerability from variot - Updated: 2025-01-30 21:58

Due to a new NDP proxy feature for EVPN leaf nodes introduced in Junos OS 17.4, crafted NDPv6 packets could transit a Junos device configured as a Broadband Network Gateway (BNG) and reach the EVPN leaf node, causing a stale MAC address entry. This could cause legitimate traffic to be discarded, leading to a Denial of Service (DoS) condition. This issue only affects Junos OS 17.4 and later releases. Prior releases do not support this feature and are unaffected by this vulnerability. This issue only affects IPv6. IPv4 ARP proxy is unaffected by this vulnerability. This issue affects Juniper Networks Junos OS: 17.4 versions prior to 17.4R2-S9, 17.4R3 on MX Series; 18.1 versions prior to 18.1R3-S9 on MX Series; 18.2 versions prior to 18.2R2-S7, 18.2R3-S3 on MX Series; 18.2X75 versions prior to 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60 on MX Series; 18.3 versions prior to 18.3R1-S7, 18.3R2-S3, 18.3R3 on MX Series; 18.4 versions prior to 18.4R1-S5, 18.4R2-S2, 18.4R3 on MX Series; 19.1 versions prior to 19.1R1-S4, 19.1R2 on MX Series; 19.2 versions prior to 19.2R1-S3, 19.2R2 on MX Series. Juniper Networks Junos OS There is an input verification vulnerability in.Service operation interruption (DoS) It may be put into a state

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    "data": "input validation error",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202004-550"
      }
    ],
    "trust": 0.6
  }
}

CVE-2020-1633 (GCVE-0-2020-1633)

Vulnerability from cvelistv5 – Published: 2020-04-09 23:09 – Updated: 2024-09-17 00:46

Title

Junos OS: MX Series: Crafted packets traversing a Broadband Network Gateway (BNG) configured with IPv6 NDP proxy could lead to Denial of Service

Summary

Severity

7.4 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-20 - Improper Input Validation

Assigner

juniper mitre root

References

1 reference

URL	Tags
https://kb.juniper.net/JSA11012	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 17.4 , < 17.4R2-S9, 17.4R3 (custom) Affected: 18.1 , < 18.1R3-S9 (custom) Affected: 18.2 , < 18.2R2-S7, 18.2R3-S3 (custom) Affected: 18.2X75 , < 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60 (custom) Affected: 18.3 , < 18.3R1-S7, 18.3R2-S3, 18.3R3 (custom) Affected: 18.4 , < 18.4R1-S5, 18.4R2-S2, 18.4R3 (custom) Affected: 19.1 , < 19.1R1-S4, 19.1R2 (custom) Affected: 19.2 , < 19.2R1-S3, 19.2R2 (custom)

Date Public

2020-04-08 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

VAR-202004-2197

CVE-2020-1633 (GCVE-0-2020-1633)

Tags

Sightings

Nomenclature

Related by attack behaviour