Vulnerability-Lookup

CVE-2021-20556 (GCVE-0-2021-20556)

Vulnerability from cvelistv5 – Published: 2024-05-03 17:31 – Updated: 2024-08-03 17:45

Title

IBM Cognos Controller information disclosure

Summary

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-06 15:50 UTC

CWE

CWE-204 - Response Discrepancy Information Exposure

Assigner

ibm mitre root

References

2 references

URL	Tags
https://www.ibm.com/support/pages/node/7149876	vendor-advisory
https://exchange.xforce.ibmcloud.com/vulnerabilit…	vdb-entry

Impacted products

4 products

Vendor	Product	Version	CPE status
IBM	Cognos Controller	Affected: 10.4.1, 10.4.2, 11.0.0	guessed
ibm	cognos_controller	Affected: 10.4.1 cpe:2.3:a:ibm:cognos_controller:10.4.1:::::::*
ibm	cognos_controller	Affected: 10.4.2 cpe:2.3:a:ibm:cognos_controller:10.4.2:::::::*
ibm	cognos_controller	Affected: 11.0.0 cpe:2.3:a:ibm:cognos_controller:11.0.0:::::::*

Show details on NVD website

JSON

To clipboard

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CNVD-2024-23287

Vulnerability from cnvd - Published: 2024-05-21

Title

IBM Cognos Controller用户枚举漏洞

Description

IBM Cognos Controller是美国国际商业机器（IBM）公司的一套商业智能与计划解决方案。该产品具有流程自动化、财务审计控制、创建和管理财务报告等功能。 IBM Cognos Controller 10.4.1版本、10.4.2版本、11.0.0版本存在用户枚举漏洞。该漏洞源于有效和无效登录尝试存在明显差异，远程攻击者可利用该漏洞枚举用户名。

Severity

中

Patch Name

IBM Cognos Controller用户枚举漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://www.ibm.com/support/pages/node/7149876

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-20556

Impacted products

Name
['IBM IBM Cognos Controller 10.4.1', 'IBM IBM Cognos Controller 10.4.2', 'IBM IBM Cognos Controller 11.0.0']

Show details on source website

JSON

To clipboard

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  "number": "CNVD-2024-23287",
  "openTime": "2024-05-21",
  "patchDescription": "IBM Cognos Controller\u662f\u7f8e\u56fd\u56fd\u9645\u5546\u4e1a\u673a\u5668\uff08IBM\uff09\u516c\u53f8\u7684\u4e00\u5957\u5546\u4e1a\u667a\u80fd\u4e0e\u8ba1\u5212\u89e3\u51b3\u65b9\u6848\u3002\u8be5\u4ea7\u54c1\u5177\u6709\u6d41\u7a0b\u81ea\u52a8\u5316\u3001\u8d22\u52a1\u5ba1\u8ba1\u63a7\u5236\u3001\u521b\u5efa\u548c\u7ba1\u7406\u8d22\u52a1\u62a5\u544a\u7b49\u529f\u80fd\u3002\r\n\r\nIBM Cognos Controller 10.4.1\u7248\u672c\u300110.4.2\u7248\u672c\u300111.0.0\u7248\u672c\u5b58\u5728\u7528\u6237\u679a\u4e3e\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u6709\u6548\u548c\u65e0\u6548\u767b\u5f55\u5c1d\u8bd5\u5b58\u5728\u660e\u663e\u5dee\u5f02\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u679a\u4e3e\u7528\u6237\u540d\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "IBM Cognos Controller\u7528\u6237\u679a\u4e3e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "IBM IBM Cognos Controller 10.4.1",
      "IBM IBM Cognos Controller 10.4.2",
      "IBM IBM Cognos Controller 11.0.0"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-20556",
  "serverity": "\u4e2d",
  "submitTime": "2024-05-09",
  "title": "IBM Cognos Controller\u7528\u6237\u679a\u4e3e\u6f0f\u6d1e"
}

FKIE_CVE-2021-20556

Vulnerability from fkie_nvd - Published: 2024-05-03 18:15 - Updated: 2026-06-17 03:34

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Summary

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.

References

URL	Tags
psirt@us.ibm.com	https://exchange.xforce.ibmcloud.com/vulnerabilities/199181	Vendor Advisory
psirt@us.ibm.com	https://www.ibm.com/support/pages/node/7149876	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://exchange.xforce.ibmcloud.com/vulnerabilities/199181	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.ibm.com/support/pages/node/7149876	Vendor Advisory

Impacted products

Vendor	Product	Version
ibm	cognos_controller	10.4.1
ibm	cognos_controller	10.4.2
ibm	cognos_controller	11.0.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Cognos Controller",
          "vendor": "IBM",
          "versions": [
            {
              "status": "affected",
              "version": "10.4.1, 10.4.2, 11.0.0"
            }
          ]
        }
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:cognos_controller:10.4.1:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "cognos_controller",
          "vendor": "ibm",
          "versions": [
            {
              "status": "affected",
              "version": "10.4.1"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ibm:cognos_controller:10.4.2:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "cognos_controller",
          "vendor": "ibm",
          "versions": [
            {
              "status": "affected",
              "version": "10.4.2"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ibm:cognos_controller:11.0.0:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "cognos_controller",
          "vendor": "ibm",
          "versions": [
            {
              "status": "affected",
              "version": "11.0.0"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:cognos_controller:10.4.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "04E5A9C3-0F44-40C1-B6B6-92839E386F56",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ibm:cognos_controller:10.4.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "7AA07D9A-71F7-446A-8A8E-DD8C357666F0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ibm:cognos_controller:11.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "4BB85020-BF02-4C91-B494-93FB19185006",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames.  IBM X-Force ID:  199181."
    },
    {
      "lang": "es",
      "value": "IBM Cognos Controller 10.4.1, 10.4.2 y 11.0.0 podr\u00edan permitir que un usuario remoto enumere nombres de usuarios debido a mensajes de error diferenciadores en nombres de usuarios existentes. ID de IBM X-Force: 199181."
    }
  ],
  "id": "CVE-2021-20556",
  "lastModified": "2026-06-17T03:34:00.853",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-20556",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-05-06T15:50:40.743794Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-03T18:15:07.907",
  "references": [
    {
      "source": "psirt@us.ibm.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/199181"
    },
    {
      "source": "psirt@us.ibm.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.ibm.com/support/pages/node/7149876"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/199181"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.ibm.com/support/pages/node/7149876"
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-204"
        }
      ],
      "source": "psirt@us.ibm.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-203"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-4GRF-X53V-R95X

Vulnerability from github – Published: 2024-05-03 18:30 – Updated: 2024-05-03 18:30

Details

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-20556"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-203",
      "CWE-204"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-03T18:15:07Z",
    "severity": "MODERATE"
  },
  "details": "IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames.  IBM X-Force ID:  199181.",
  "id": "GHSA-4grf-x53v-r95x",
  "modified": "2024-05-03T18:30:37Z",
  "published": "2024-05-03T18:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20556"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/199181"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/7149876"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-20556

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

Aliases

CVE-2021-20556

Aliases

CVE-2021-20556

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-20556",
    "id": "GSD-2021-20556"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20556"
      ],
      "id": "GSD-2021-20556",
      "modified": "2023-12-13T01:23:12.239229Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-20556",
        "STATE": "RESERVED"
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
          }
        ]
      }
    }
  }
}

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.

Action not permitted

CVE-2021-20556 (GCVE-0-2021-20556)

CNVD-2024-23287

FKIE_CVE-2021-20556

GHSA-4GRF-X53V-R95X

GSD-2021-20556

Tags

Sightings

Nomenclature

Related by attack behaviour