CVE-2020-35480
Vulnerability from cvelistv5
Published
2020-12-18 07:40
Modified
2024-08-04 17:02
Severity ?
EPSS score ?
Summary
An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.
References
{ containers: { adp: [ { providerMetadata: { dateUpdated: "2024-08-04T17:02:08.193Z", orgId: "af854a3a-2127-422b-91ae-364da2661108", shortName: "CVE", }, references: [ { tags: [ "x_refsource_MISC", "x_transferred", ], url: "https://phabricator.wikimedia.org/T120883", }, { tags: [ "x_refsource_MISC", "x_transferred", ], url: "https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html", }, { name: "DSA-4816", tags: [ "vendor-advisory", "x_refsource_DEBIAN", "x_transferred", ], url: "https://www.debian.org/security/2020/dsa-4816", }, { name: "[debian-lts-announce] 20201223 [SECURITY] [DLA 2504-1] mediawiki security update", tags: [ "mailing-list", "x_refsource_MLIST", "x_transferred", ], url: "https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html", }, { name: "FEDORA-2020-0be2d40e13", tags: [ "vendor-advisory", "x_refsource_FEDORA", "x_transferred", ], url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/", }, ], title: "CVE Program Container", }, ], cna: { affected: [ { product: "n/a", vendor: "n/a", versions: [ { status: "affected", version: "n/a", }, ], }, ], descriptions: [ { lang: "en", value: "An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.", }, ], problemTypes: [ { descriptions: [ { description: "n/a", lang: "en", type: "text", }, ], }, ], providerMetadata: { dateUpdated: "2020-12-27T03:06:16", orgId: "8254265b-2729-46b6-b9e3-3dfca2d5bfca", shortName: "mitre", }, references: [ { tags: [ "x_refsource_MISC", ], url: "https://phabricator.wikimedia.org/T120883", }, { tags: [ "x_refsource_MISC", ], url: "https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html", }, { name: "DSA-4816", tags: [ "vendor-advisory", "x_refsource_DEBIAN", ], url: "https://www.debian.org/security/2020/dsa-4816", }, { name: "[debian-lts-announce] 20201223 [SECURITY] [DLA 2504-1] mediawiki security update", tags: [ "mailing-list", "x_refsource_MLIST", ], url: "https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html", }, { name: "FEDORA-2020-0be2d40e13", tags: [ "vendor-advisory", "x_refsource_FEDORA", ], url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/", }, ], x_legacyV4Record: { CVE_data_meta: { ASSIGNER: "cve@mitre.org", ID: "CVE-2020-35480", 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: "An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.", }, ], }, problemtype: { problemtype_data: [ { description: [ { lang: "eng", value: "n/a", }, ], }, ], }, references: { reference_data: [ { name: "https://phabricator.wikimedia.org/T120883", refsource: "MISC", url: "https://phabricator.wikimedia.org/T120883", }, { name: "https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html", refsource: "MISC", url: "https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html", }, { name: "DSA-4816", refsource: "DEBIAN", url: "https://www.debian.org/security/2020/dsa-4816", }, { name: "[debian-lts-announce] 20201223 [SECURITY] [DLA 2504-1] mediawiki security update", refsource: "MLIST", url: "https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html", }, { name: "FEDORA-2020-0be2d40e13", refsource: "FEDORA", url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/", }, ], }, }, }, }, cveMetadata: { assignerOrgId: "8254265b-2729-46b6-b9e3-3dfca2d5bfca", assignerShortName: "mitre", cveId: "CVE-2020-35480", datePublished: "2020-12-18T07:40:38", dateReserved: "2020-12-16T00:00:00", dateUpdated: "2024-08-04T17:02:08.193Z", state: "PUBLISHED", }, dataType: "CVE_RECORD", dataVersion: "5.1", "vulnerability-lookup:meta": { nvd: "{\"cve\":{\"id\":\"CVE-2020-35480\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-12-18T08:15:15.437\",\"lastModified\":\"2024-11-21T05:27:22.990\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.\"},{\"lang\":\"es\",\"value\":\"Se detectó un problema en MediaWiki versiones anteriores a 1.35.1. Una falta de usuarios (cuentas que no existen) y usuarios ocultos (cuentas que se han ocultado explícitamente por ser abusivas o similares) que el visualizador no puede observar son manejadas de forma diferente, exponiendo la información confidencial sobre el estado oculto a los visualizadores sin privilegios. Esto se presenta en varias rutas de código\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.35.1\",\"matchCriteriaId\":\"DA95C77A-2616-4CCA-B07F-6A5CD7762BA1\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"}]}]}],\"references\":[{\"url\":\"https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://phabricator.wikimedia.org/T120883\",\"source\":\"cve@mitre.org\",\"tags\":[\"Permissions Required\"]},{\"url\":\"https://www.debian.org/security/2020/dsa-4816\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://phabricator.wikimedia.org/T120883\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Permissions Required\"]},{\"url\":\"https://www.debian.org/security/2020/dsa-4816\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}", }, }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.