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CVE-2021-31381

Status: ModifiedCritical (9.1)—

A configuration weakness in the JBoss Application Server (AppSvr) component of Juniper Networks SRC Series allows a remote attacker to send a specially crafted query to cause the web server to delete files which may allow the attacker to disrupt the integrity and availability of the system.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Juniper — Session AND Resource Control

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-31381",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "sirt@juniper.net",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.1,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "sirt@juniper.net",
      "affectedData": [
        {
          "vendor": "Juniper Networks",
          "product": "SRC Series",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "4.12.0R5",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.13.0",
              "lessThan": "4.13.0R3",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-10-19T19:15:11.193",
  "references": [
    {
      "url": "https://kb.juniper.net/JSA11248",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "sirt@juniper.net"
    },
    {
      "url": "https://kb.juniper.net/JSA11248",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "sirt@juniper.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-16"
        },
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A configuration weakness in the JBoss Application Server (AppSvr) component of Juniper Networks SRC Series allows a remote attacker to send a specially crafted query to cause the web server to delete files which may allow the attacker to disrupt the integrity and availability of the system."
    },
    {
      "lang": "es",
      "value": "Una debilidad de configuración en el componente JBoss Application Server (AppSvr) de Juniper Networks SRC Series permite a un atacante remoto enviar una consulta especialmente diseñada para causar que el servidor web elimine archivos, lo que puede permitir al atacante interrumpir la integridad y disponibilidad del sistema"
    }
  ],
  "lastModified": "2026-06-17T03:51:41.320",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:juniper:session_and_resource_control:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5B3DEF7F-E8BF-4BB8-9989-8D4CFAE5539A",
              "versionEndExcluding": "4.12.0r5"
            },
            {
              "criteria": "cpe:2.3:a:juniper:session_and_resource_control:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0478F1B6-0A80-4CE2-9AF5-251A02BBAC5F",
              "versionEndExcluding": "4.13.0r3",
              "versionStartIncluding": "4.13.0r1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "sirt@juniper.net"
}