Vulnerability-Lookup

FKIE_CVE-2021-0276

Vulnerability from fkie_nvd - Published: 2021-07-15 20:15 - Updated: 2026-06-17 03:29

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

A stack-based Buffer Overflow vulnerability in Juniper Networks SBR Carrier with EAP (Extensible Authentication Protocol) authentication configured, allows an attacker sending specific packets causing the radius daemon to crash resulting with a Denial of Service (DoS) or leading to remote code execution (RCE). By continuously sending this specific packets, an attacker can repeatedly crash the radius daemon, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks SBR Carrier: 8.4.1 versions prior to 8.4.1R19; 8.5.0 versions prior to 8.5.0R10; 8.6.0 versions prior to 8.6.0R4.

References

	URL	Tags
	sirt@juniper.net	https://kb.juniper.net/JSA11180	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://kb.juniper.net/JSA11180	Vendor Advisory

Impacted products

Vendor	Product	Version
juniper	steel-belted_radius_carrier	8.4.1
juniper	steel-belted_radius_carrier	8.4.1
juniper	steel-belted_radius_carrier	8.5.0
juniper	steel-belted_radius_carrier	8.5.0
juniper	steel-belted_radius_carrier	8.6.0

JSON

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{
  "affected": [
    {
      "affectedData": [
        {
          "product": "SBR Carrier",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "8.4.1R19",
              "status": "affected",
              "version": "8.4.1",
              "versionType": "custom"
            },
            {
              "lessThan": "8.5.0R10",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.6.0R4",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "sirt@juniper.net"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:juniper:steel-belted_radius_carrier:8.4.1:-:*:*:*:*:*:*",
              "matchCriteriaId": "8BE22F9D-096C-4826-837D-81AC0DE6243E",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:juniper:steel-belted_radius_carrier:8.4.1:r13:*:*:*:*:*:*",
              "matchCriteriaId": "167FBC0D-C9C4-4F38-A0E5-55C9E0E9027F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:juniper:steel-belted_radius_carrier:8.5.0:-:*:*:*:*:*:*",
              "matchCriteriaId": "433CE00E-8213-424D-8B71-F4306134C857",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:juniper:steel-belted_radius_carrier:8.5.0:r4:*:*:*:*:*:*",
              "matchCriteriaId": "0EAAB90E-A473-4EFD-A9A6-05807873712C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:juniper:steel-belted_radius_carrier:8.6.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "2C96D4A3-BAD8-42BE-A1AE-F3719BD8A7F5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A stack-based Buffer Overflow vulnerability in Juniper Networks SBR Carrier with EAP (Extensible Authentication Protocol) authentication configured, allows an attacker sending specific packets causing the radius daemon to crash resulting with a Denial of Service (DoS) or leading to remote code execution (RCE). By continuously sending this specific packets, an attacker can repeatedly crash the radius daemon, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks SBR Carrier: 8.4.1 versions prior to 8.4.1R19; 8.5.0 versions prior to 8.5.0R10; 8.6.0 versions prior to 8.6.0R4."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Desbordamiento del B\u00fafer en la regi\u00f3n stack de la memoria en Juniper Networks SBR Carrier con la autenticaci\u00f3n EAP (Extensible Authentication Protocol) configurada, permite a un atacante enviar paquetes espec\u00edficos causando el bloqueo del demonio radius, resultando en una Denegaci\u00f3n de Servicio (DoS) o conllevando a una ejecuci\u00f3n de c\u00f3digo remota (RCE). Al enviar continuamente estos paquetes espec\u00edficos, un atacante puede bloquear repetidamente el daemon radius, causando una Denegaci\u00f3n de Servicio (DoS) sostenida. Este problema afecta a Juniper Networks SBR Carrier: versiones 8.4.1 anteriores a 8.4.1R19; versiones 8.5.0 anteriores a 8.5.0R10; versiones 8.6.0 anteriores a 8.6.0R4"
    }
  ],
  "id": "CVE-2021-0276",
  "lastModified": "2026-06-17T03:29:41.080",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "sirt@juniper.net",
        "type": "Secondary"
      }
    ]
  },
  "published": "2021-07-15T20:15:09.290",
  "references": [
    {
      "source": "sirt@juniper.net",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.juniper.net/JSA11180"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.juniper.net/JSA11180"
    }
  ],
  "sourceIdentifier": "sirt@juniper.net",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "sirt@juniper.net",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-0276 (GCVE-0-2021-0276)

Vulnerability from cvelistv5 – Published: 2021-07-15 20:00 – Updated: 2024-09-16 19:00

Title

Steel-Belted Radius Carrier Edition: Remote code execution vulnerability when EAP Authentication is configured.

Summary

Severity

9.8 (Critical)


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

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

juniper mitre root

References

1 reference

URL	Tags
https://kb.juniper.net/JSA11180	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Juniper Networks	SBR Carrier	Affected: 8.4.1 , < 8.4.1R19 (custom) Affected: 8.5.0 , < 8.5.0R10 (custom) Affected: 8.6.0 , < 8.6.0R4 (custom)

Date Public

2021-07-14 00:00

Show details on NVD website

JSON

To clipboard

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    ],
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      ],
      "configurations": [
        {
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      ],
      "exploits": [
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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.