Vulnerability-Lookup

VAR-202110-0412

Vulnerability from variot - Updated: 2024-08-14 15:11

In Point to MultiPoint (P2MP) scenarios within established sessions between network or adjacent neighbors the improper use of a source to destination copy write operation combined with a Stack-based Buffer Overflow on certain specific packets processed by the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved sent by a remote unauthenticated network attacker causes the RPD to crash causing a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1. Juniper Networks Junos OS Evolved 20.1 versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R3-EVO; 20.3 versions prior to 20.3R2-EVO

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CVE-2021-31383 (GCVE-0-2021-31383)

Vulnerability from cvelistv5 – Published: 2021-10-19 18:17 – Updated: 2024-09-16 20:21

Title

Junos OS and Junos OS Evolved: In Point to MultiPoint (P2MP) scenarios receipt of various crafted packets causes RPD to core.

Summary

Severity

7.5 (High)


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

CWE

improper usage of a source to destination copy write operation
Denial of Service (DoS)
CWE-121 - Stack-based Buffer Overflow

Assigner

juniper mitre root

References

1 reference

URL	Tags
https://kb.juniper.net/JSA11251	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version
Juniper Networks	Junos OS	Unaffected: unspecified , < 19.2R1 (custom) Affected: 19.2 , < 19.2R3-S2 (custom) Affected: 19.3 , < 19.3R2-S6, 19.3R3-S2 (custom) Affected: 19.4 , < 19.4R1-S4, 19.4R2-S4, 19.4R3-S3 (custom) Affected: 20.1 , < 20.1R2-S2, 20.1R3 (custom) Affected: 20.2 , < 20.2R2-S3, 20.2R3 (custom) Affected: 20.3 , < 20.3R2 (custom)
Juniper Networks	Junos OS Evolved	Affected: 20.1 , < 20.1R3-EVO (custom) Affected: 20.2 , < 20.2R3-EVO (custom) Affected: 20.3 , < 20.3R2-EVO (custom)

Date Public

2021-10-13 00:00

Show details on NVD website

JSON

To clipboard

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              "lessThan": "20.1R2-S2, 20.1R3",
              "status": "affected",
              "version": "20.1",
              "versionType": "custom"
            },
            {
              "lessThan": "20.2R2-S3, 20.2R3",
              "status": "affected",
              "version": "20.2",
              "versionType": "custom"
            },
            {
              "lessThan": "20.3R2",
              "status": "affected",
              "version": "20.3",
              "versionType": "custom"
            }
          ]
        },
        {
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          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "20.1R3-EVO",
              "status": "affected",
              "version": "20.1",
              "versionType": "custom"
            },
            {
              "lessThan": "20.2R3-EVO",
              "status": "affected",
              "version": "20.2",
              "versionType": "custom"
            },
            {
              "lessThan": "20.3R2-EVO",
              "status": "affected",
              "version": "20.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "The following configuration is required for Junos OS:\n  [protocols ldp p2mp]\n  [protocols ldp interface \"interface\"]\n  [protocols ldp traffic-statistics {sensor-based-stats;}]\n\nThe following configuration is required for Junos OS Evolved: \n  [configuration protocols ldp p2mp]\n  [configuration protocols ldp interface \"interface\"]"
        }
      ],
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      "descriptions": [
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          "value": "In Point to MultiPoint (P2MP) scenarios within established sessions between network or adjacent neighbors the improper use of a source to destination copy write operation combined with a Stack-based Buffer Overflow on certain specific packets processed by the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved sent by a remote unauthenticated network attacker causes the RPD to crash causing a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1. Juniper Networks Junos OS Evolved 20.1 versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R3-EVO; 20.3 versions prior to 20.3R2-EVO."
        }
      ],
      "exploits": [
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          "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
        }
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            "attackVector": "NETWORK",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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          "descriptions": [
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              "description": "improper usage of a source to destination copy write operation",
              "lang": "en",
              "type": "text"
            }
          ]
        },
        {
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              "type": "text"
            }
          ]
        },
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              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
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          ]
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      },
      "references": [
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          "url": "https://kb.juniper.net/JSA11251"
        }
      ],
      "solutions": [
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          "lang": "en",
          "value": "The following software releases have been updated to resolve this specific issue: \n\nJunos OS: 19.2R3-S2, 19.3R2-S6, 19.3R3-S2, 19.4R1-S4, 19.4R2-S4, 19.4R3-S3, 20.1R2-S2, 20.1R3, 20.2R2-S3, 20.2R3, 20.3R2, 20.4R1, and all subsequent releases.\n\nJunos OS Evolved: 20.1R3-EVO, 20.2R3-EVO, 20.3R2-EVO, 20.4R1-EVO, and all subsequent releases."
        }
      ],
      "source": {
        "advisory": "JSA11251",
        "defect": [
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        ],
        "discovery": "INTERNAL"
      },
      "title": "Junos OS and Junos OS Evolved: In Point to MultiPoint (P2MP) scenarios receipt of various crafted packets causes RPD to core.",
      "workarounds": [
        {
          "lang": "en",
          "value": "For Junos OS you can remove the traffic-statistics from the configuration to work around this issue.\n\n  [protoccols ldp traffic-statistics {sensor-based-stats;}]\n\nFor Junos OS Evolved there are no viable workarounds for this issue."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "sirt@juniper.net",
          "DATE_PUBLIC": "2021-10-13T16:00:00.000Z",
          "ID": "CVE-2021-31383",
          "STATE": "PUBLIC",
          "TITLE": "Junos OS and Junos OS Evolved: In Point to MultiPoint (P2MP) scenarios receipt of various crafted packets causes RPD to core."
        },
        "affects": {
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              {
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                    {
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                      "version": {
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                          {
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                            "version_name": "19.4",
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                      "version": {
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        "exploit": [
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        ]
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    }
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  "cveMetadata": {
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    "assignerShortName": "juniper",
    "cveId": "CVE-2021-31383",
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    "dateReserved": "2021-04-15T00:00:00.000Z",
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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.