Vulnerability-Lookup

CVE-2021-42096 (GCVE-0-2021-42096)

Vulnerability from cvelistv5 – Published: 2021-10-21 00:40 – Updated: 2024-08-04 03:22

Summary

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.

Severity

4.3 (Medium)


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

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://mail.python.org/archives/list/mailman-ann…	x_refsource_CONFIRM
https://bugs.launchpad.net/mailman/+bug/1947639	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2021/10/21/4	mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-4991	vendor-advisoryx_refsource_DEBIAN

Show details on NVD website

JSON

To clipboard

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ALSA-2021:4826

Vulnerability from osv_almalinux – Published: 2021-11-23 20:17 – Updated: 2021-11-24 20:52 – Source website

Summary

Important: mailman:2.1 security update

Details

Mailman is a program used to help manage e-mail discussion lists.

Security Fix(es):

mailman: CSRF token bypass allows to perform CSRF attacks and account takeover (CVE-2021-42097)
mailman: CSRF token derived from admin password allows offline brute-force attack (CVE-2021-42096)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://errata.almalinux.org/8/ALSA-2021-4826.html	ADVISORY
	https://vulners.com/cve/CVE-2021-42096	REPORT
	https://vulners.com/cve/CVE-2021-42097	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "mailman"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            {
              "fixed": "3:2.1.29-12.module_el8.5.0+26+48d4c9ee.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
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        "ecosystem": "AlmaLinux:8",
        "name": "mailman"
      },
      "ranges": [
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            }
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          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
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  "id": "ALSA-2021:4826",
  "modified": "2021-11-24T20:52:59Z",
  "published": "2021-11-23T20:17:35Z",
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      "url": "https://errata.almalinux.org/8/ALSA-2021-4826.html"
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      "url": "https://vulners.com/cve/CVE-2021-42096"
    },
    {
      "type": "REPORT",
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    }
  ],
  "related": [
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    "CVE-2021-42096"
  ],
  "summary": "Important: mailman:2.1 security update"
}

FKIE_CVE-2021-42096

Vulnerability from fkie_nvd - Published: 2021-10-21 01:15 - Updated: 2026-06-17 04:09

Severity

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

Summary

References

URL	Tags
cve@mitre.org	http://www.openwall.com/lists/oss-security/2021/10/21/4	Mailing List, Patch, Third Party Advisory
cve@mitre.org	https://bugs.launchpad.net/mailman/+bug/1947639	Patch, Third Party Advisory
cve@mitre.org	https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
cve@mitre.org	https://www.debian.org/security/2021/dsa-4991	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2021/10/21/4	Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://bugs.launchpad.net/mailman/+bug/1947639	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2021/dsa-4991	Third Party Advisory

Impacted products

	Vendor	Product	Version
	gnu	mailman	*
	debian	debian_linux	10.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CDD63075-218B-47B2-9E0B-FE13FAEDEDAB",
              "versionEndExcluding": "2.1.35",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password."
    },
    {
      "lang": "es",
      "value": "GNU Mailman versiones anteriores a 2.1.35, puede permitir una Escalada de Privilegios remota. Un determinado valor de csrf_token es derivado de la contrase\u00f1a del administrador, y puede ser \u00fatil para llevar a cabo un ataque de fuerza bruta contra esa contrase\u00f1a"
    }
  ],
  "id": "CVE-2021-42096",
  "lastModified": "2026-06-17T04:09:18.623",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-10-21T01:15:06.893",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/10/21/4"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://bugs.launchpad.net/mailman/+bug/1947639"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2021/dsa-4991"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/10/21/4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://bugs.launchpad.net/mailman/+bug/1947639"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2021/dsa-4991"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-307"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-C875-CGWJ-4FJW

Vulnerability from github – Published: 2022-05-24 19:18 – Updated: 2022-05-24 19:18

Details

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-42096"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-307"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-10-21T01:15:00Z",
    "severity": "MODERATE"
  },
  "details": "GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.",
  "id": "GHSA-c875-cgwj-4fjw",
  "modified": "2022-05-24T19:18:31Z",
  "published": "2022-05-24T19:18:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42096"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/mailman/+bug/1947639"
    },
    {
      "type": "WEB",
      "url": "https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-4991"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/10/21/4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GSD-2021-42096

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

Details

Aliases

CVE-2021-42096

Aliases

CVE-2021-42096

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-42096",
    "description": "GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.",
    "id": "GSD-2021-42096",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-42096.html",
      "https://www.debian.org/security/2021/dsa-4991",
      "https://access.redhat.com/errata/RHSA-2021:4839",
      "https://access.redhat.com/errata/RHSA-2021:4838",
      "https://access.redhat.com/errata/RHSA-2021:4837",
      "https://access.redhat.com/errata/RHSA-2021:4826",
      "https://ubuntu.com/security/CVE-2021-42096",
      "https://security.archlinux.org/CVE-2021-42096",
      "https://linux.oracle.com/cve/CVE-2021-42096.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-42096"
      ],
      "details": "GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.",
      "id": "GSD-2021-42096",
      "modified": "2023-12-13T01:23:06.470541Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-42096",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
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                          "version_value": "n/a"
                        }
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                    }
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                "value": "n/a"
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          }
        ]
      },
      "references": {
        "reference_data": [
          {
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          },
          {
            "name": "https://bugs.launchpad.net/mailman/+bug/1947639",
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            "name": "[oss-security] 20211021 Mailman 2.1.35 security release",
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          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
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        "references": {
          "reference_data": [
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            },
            {
              "name": "[oss-security] 20211021 Mailman 2.1.35 security release",
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            }
          ]
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
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          "impactScore": 1.4
        }
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    }
  }
}

OESA-2021-1405 (CVE-2020-12108)

Vulnerability from osv_openeuler – Published: 2021-10-30 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

mailman security update

Details

Mailman is free software for managing electronic mail discussion and e-newsletter lists. Mailman is integrated with the web, making it easy for users to manage their accounts and for list owners to administer their lists. Mailman supports built-in archiving, automatic bounce processing, content filtering, digest delivery, spam filters, and more.

Security Fix(es):

/options/mailman in GNU Mailman before 2.1.31 allows Arbitrary Content Injection.(CVE-2020-12108)

GNU Mailman 2.x before 2.1.30 uses the .obj extension for scrubbed application/octet-stream MIME parts. This behavior may contribute to XSS attacks against list-archive visitors, because an HTTP reply from an archive web server may lack a MIME type, and a web browser may perform MIME sniffing, conclude that the MIME type should have been text/html, and execute JavaScript code.(CVE-2020-12137)

GNU Mailman before 2.1.33 allows arbitrary content injection via the Cgi/private.py private archive login page.(CVE-2020-15011)

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that value in a CSRF attack against an admin (e.g., for account takeover).(CVE-2021-42097)

Severity

8.8 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2020-12108	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2020-12137	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2020-15011	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-42096	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-42097	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "mailman-debugsource-2.1.29-8.oe1.aarch64.rpm",
          "mailman-debuginfo-2.1.29-8.oe1.aarch64.rpm",
          "mailman-2.1.29-8.oe1.aarch64.rpm"
        ],
        "src": [
          "mailman-2.1.29-8.oe1.src.rpm"
        ],
        "x86_64": [
          "mailman-2.1.29-8.oe1.x86_64.rpm",
          "mailman-debuginfo-2.1.29-8.oe1.x86_64.rpm",
          "mailman-debugsource-2.1.29-8.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "mailman",
        "purl": "pkg:rpm/openEuler/mailman\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.29-8.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "mailman-debugsource-2.1.29-8.oe1.aarch64.rpm",
          "mailman-debuginfo-2.1.29-8.oe1.aarch64.rpm",
          "mailman-2.1.29-8.oe1.aarch64.rpm"
        ],
        "src": [
          "mailman-2.1.29-8.oe1.src.rpm"
        ],
        "x86_64": [
          "mailman-2.1.29-8.oe1.x86_64.rpm",
          "mailman-debuginfo-2.1.29-8.oe1.x86_64.rpm",
          "mailman-debugsource-2.1.29-8.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "mailman",
        "purl": "pkg:rpm/openEuler/mailman\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.29-8.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Mailman is free software for managing electronic mail discussion and e-newsletter lists. Mailman is integrated with the web, making it easy for users to manage their accounts and for list owners to administer their lists. Mailman supports built-in archiving, automatic bounce processing, content filtering, digest delivery, spam filters, and more.\r\n\r\nSecurity Fix(es):\r\n\r\n/options/mailman in GNU Mailman before 2.1.31 allows Arbitrary Content Injection.(CVE-2020-12108)\r\n\r\nGNU Mailman 2.x before 2.1.30 uses the .obj extension for scrubbed application/octet-stream MIME parts. This behavior may contribute to XSS attacks against list-archive visitors, because an HTTP reply from an archive web server may lack a MIME type, and a web browser may perform MIME sniffing, conclude that the MIME type should have been text/html, and execute JavaScript code.(CVE-2020-12137)\r\n\r\nGNU Mailman before 2.1.33 allows arbitrary content injection via the Cgi/private.py private archive login page.(CVE-2020-15011)\n\nGNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.(CVE-2021-42096)\n\nGNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that value in a CSRF attack against an admin (e.g., for account takeover).(CVE-2021-42097)",
  "id": "OESA-2021-1405",
  "modified": "2026-08-06T11:04:40Z",
  "published": "2021-10-30T11:04:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1405"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12108"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12137"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15011"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42096"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42097"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "mailman security update",
  "upstream": [
    "CVE-2020-12108",
    "CVE-2020-12137",
    "CVE-2020-15011",
    "CVE-2021-42096",
    "CVE-2021-42097"
  ]
}

OPENSUSE-SU-2021:1436-1

Vulnerability from csaf_opensuse - Published: 2021-11-02 09:25 - Updated: 2026-09-20 19:30

Summary

Security update for mailman

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2021-42096.

CVE-2021-42096

5.3 (Medium)


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

Recommended: 1 product

Open the full advisory

OPENSUSE-SU-2021:1452-1

Vulnerability from csaf_opensuse - Published: 2021-11-05 15:06 - Updated: 2026-09-20 19:30

Summary

Security update for mailman

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2021-42096.

CVE-2021-42096

5.3 (Medium)


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

Recommended: 4 products

Open the full advisory

RHSA-2021:4826

Vulnerability from csaf_opensuse - Published: 2021-11-23 00:00 - Updated: 2026-09-20 11:18

Summary

security update for mailman

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2021-42096.

CVE-2021-42096

5.3 (Medium)


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

Recommended: 1 product

Open the full advisory

RHSA-2021:4837

Vulnerability from csaf_redhat - Published: 2021-11-24 08:37 - Updated: 2026-09-07 19:10

Summary

Red Hat Security Advisory: mailman:2.1 security update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2021-42096.

CVE-2021-42096

Sensitive information is exposed to unprivileged users in mailman. The hash of the list admin password is used to derive the CSRF (Cross-site Request Forgery) token, which is exposed to unprivileged members of a list. Malicious members may use the CSRF token to perform an offline brute-force attack to retrieve the list admin password.

4.3 (Medium)


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

Fixed: 13 products

https://access.redhat.com/errata/RHSA-2021:4837

Open the full advisory

RHSA-2021:4838

Vulnerability from csaf_redhat - Published: 2021-11-24 08:34 - Updated: 2026-09-07 19:10

Summary

Red Hat Security Advisory: mailman:2.1 security update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2021-42096.

CVE-2021-42096

4.3 (Medium)


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

Fixed: 13 products

https://access.redhat.com/errata/RHSA-2021:4838

Open the full advisory

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.

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-2021-42096 (GCVE-0-2021-42096)

OESA-2021-1405 (CVE-2020-12108)

Tags

Sightings

Nomenclature

Related by attack behaviour