CVE-2020-5941 (GCVE-0-2020-5941)

Vulnerability from cvelistv5 – Published: 2020-11-05 19:18 – Updated: 2024-08-04 08:47
VLAI
Summary
On BIG-IP versions 16.0.0-16.0.0.1 and 15.1.0-15.1.0.5, using the RESOLV::lookup command within an iRule may cause the Traffic Management Microkernel (TMM) to generate a core file and restart. This issue occurs when data exceeding the maximum limit of a hostname passes to the RESOLV::lookup command.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • DoS
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a BIG-IP Affected: 16.0.0-16.0.0.1, 15.1.0-15.1.0.5
Show details on NVD website
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                    "criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "4F9D19B2-1D89-4917-A82E-289EDE52C68F",
                    "versionEndExcluding": "16.0.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "240E6558-C486-4FEB-A7AC-CCB3692D4331",
                    "versionEndExcluding": "15.1.1",
                    "versionStartIncluding": "15.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E0319299-FCCE-4B8F-8DB5-83AF0C3D68D5",
                    "versionEndExcluding": "16.0.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "On BIG-IP versions 16.0.0-16.0.0.1 and 15.1.0-15.1.0.5, using the RESOLV::lookup command within an iRule may cause the Traffic Management Microkernel (TMM) to generate a core file and restart. This issue occurs when data exceeding the maximum limit of a hostname passes to the RESOLV::lookup command."
          },
          {
            "lang": "es",
            "value": "En BIG-IP versiones 16.0.0-16.0.0.1 y 15.1.0-15.1.0.5, usando el comando RESOLV::lookup dentro de una iRule puede causar que Traffic Management Microkernel (TMM) genere un archivo central y se reinicie.\u0026#xa0;Este problema ocurre cuando los datos que exceden el l\u00edmite m\u00e1ximo de un nombre de host pasan al comando RESOLV::lookup"
          }
        ],
        "id": "CVE-2020-5941",
        "lastModified": "2024-11-21T05:34:52.320",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 5.0,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2020-11-05T20:15:17.613",
        "references": [
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://support.f5.com/csp/article/K03125360"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://support.f5.com/csp/article/K03125360"
          }
        ],
        "sourceIdentifier": "f5sirt@f5.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-05-22T16:44:14+00:00",
      "cve": "CVE-2020-5941",
      "id": "CVE-2020-5941",
      "initial_release_date": "2020-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2020-5941",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-5941.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.