CVE-2021-42096

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "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."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-10-23T10:06:19.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://bugs.launchpad.net/mailman/+bug/1947639"}, {"name": "[oss-security] 20211021 Mailman 2.1.35 security release", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2021/10/21/4"}, {"name": "DSA-4991", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2021/dsa-4991"}], "x_legacyV4Record": {"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": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/", "refsource": "CONFIRM", "url": "https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/"}, {"name": "https://bugs.launchpad.net/mailman/+bug/1947639", "refsource": "CONFIRM", "url": "https://bugs.launchpad.net/mailman/+bug/1947639"}, {"name": "[oss-security] 20211021 Mailman 2.1.35 security release", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2021/10/21/4"}, {"name": "DSA-4991", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2021/dsa-4991"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T03:22:25.970Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://bugs.launchpad.net/mailman/+bug/1947639"}, {"name": "[oss-security] 20211021 Mailman 2.1.35 security release", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2021/10/21/4"}, {"name": "DSA-4991", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "https://www.debian.org/security/2021/dsa-4991"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-42096", "datePublished": "2021-10-21T00:40:34.000Z", "dateReserved": "2021-10-07T00:00:00.000Z", "dateUpdated": "2024-08-04T03:22:25.970Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"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"}]}

{"affected_release": [{"advisory": "RHSA-2021:4826", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "mailman:2.1-8050020211109091611.aa3ced04", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-23T00:00:00Z"}, {"advisory": "RHSA-2021:4838", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "mailman:2.1-8010020211110115755.656b880e", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-11-24T00:00:00Z"}, {"advisory": "RHSA-2021:4837", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "mailman:2.1-8020020211110111201.c3a0935b", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-11-24T00:00:00Z"}, {"advisory": "RHSA-2021:4839", "cpe": "cpe:/a:redhat:rhel_eus:8.4", "package": "mailman:2.1-8040020211109094506.70584597", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2021-11-24T00:00:00Z"}], "bugzilla": {"description": "mailman: CSRF token derived from admin password allows offline brute-force attack", "id": "2020575", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2020575"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "status": "verified"}, "cwe": "CWE-200", "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.", "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."], "name": "CVE-2021-42096", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "mailman", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "mailman", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2021-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-42096\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-42096"], "statement": "This issue did not affect the versions of mailman as shipped with Red Hat Enterprise Linux 6, and 7 as they did not use CSRF tokens in members pages.", "threat_severity": "Moderate"}

{}