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CVE-2021-20450

Status: AnalyzedMedium (4.3)—

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 196640.

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)

IBM — Cognos Controller

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-20450",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-20450",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-06-13T16:47:01.151601Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "vendor": "IBM",
          "product": "Cognos Controller",
          "versions": [
            {
              "status": "affected",
              "version": "10.4.1, 10.4.2, 11.0.0"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2024-05-03T17:15:07.363",
  "references": [
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/196640",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/7149876",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/196640",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/7149876",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-565"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic.  IBM X-Force ID:  196640."
    },
    {
      "lang": "es",
      "value": "IBM Cognos Controller 10.4.1, 10.4.2 y 11.0.0 no establece el atributo seguro en los tokens de autorización ni en las cookies de sesión. Los atacantes pueden obtener los valores de las cookies enviando un enlace http:// a un usuario o colocando este enlace en un sitio al que accede el usuario. La cookie se enviará al enlace inseguro y el atacante podrá obtener el valor de la cookie espiando el tráfico. ID de IBM X-Force: 196640."
    }
  ],
  "lastModified": "2026-06-17T03:33:52.410",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:cognos_controller:10.4.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "04E5A9C3-0F44-40C1-B6B6-92839E386F56"
            },
            {
              "criteria": "cpe:2.3:a:ibm:cognos_controller:10.4.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7AA07D9A-71F7-446A-8A8E-DD8C357666F0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:cognos_controller:11.0.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4BB85020-BF02-4C91-B494-93FB19185006"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com"
}