CVE-2020-5283

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The impact of this vulnerability is mitigated by the need for an attacker to have commit privileges to a CVS repository exposed by an otherwise trusted ViewVC instance that also has the `show_subdir_lastmod` feature enabled. The attack vector involves files with unsafe names (names that, when embedded into an HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create. This vulnerability is patched in versions 1.2.1 and 1.1.28."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)"}]}]}, "references": {"reference_data": [{"name": "https://github.com/viewvc/viewvc/security/advisories/GHSA-xpxf-fvqv-7mfg", "refsource": "CONFIRM", "url": "https://github.com/viewvc/viewvc/security/advisories/GHSA-xpxf-fvqv-7mfg"}, {"name": "https://github.com/viewvc/viewvc/issues/211", "refsource": "MISC", "url": "https://github.com/viewvc/viewvc/issues/211"}, {"name": "https://github.com/viewvc/viewvc/commit/ad0f966e9a997b17d853a6972ea283d4dcd70fa8", "refsource": "MISC", "url": "https://github.com/viewvc/viewvc/commit/ad0f966e9a997b17d853a6972ea283d4dcd70fa8"}, {"name": "FEDORA-2020-c952520959", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2Q2STF2MKT24HXZ3YZIU7CN6F6QM67I5/"}]}, "source": {"advisory": "GHSA-xpxf-fvqv-7mfg", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T08:22:09.095Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/viewvc/viewvc/security/advisories/GHSA-xpxf-fvqv-7mfg"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/viewvc/viewvc/issues/211"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/viewvc/viewvc/commit/ad0f966e9a997b17d853a6972ea283d4dcd70fa8"}, {"name": "FEDORA-2020-c952520959", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2Q2STF2MKT24HXZ3YZIU7CN6F6QM67I5/"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-5283", "datePublished": "2020-04-03T00:10:13.000Z", "dateReserved": "2020-01-02T00:00:00.000Z", "dateUpdated": "2024-08-04T08:22:09.095Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "viewvc", "vendor": "viewvc", "versions": [{"status": "affected", "version": "< 1.1.28"}, {"status": "affected", "version": ">= 1.2.0, < 1.2.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:viewvc:viewvc:*:*:*:*:*:*:*:*", "matchCriteriaId": "317FCBFB-4761-4735-8367-4AE5D03AB998", "versionEndExcluding": "1.1.28", "vulnerable": true}, {"criteria": "cpe:2.3:a:viewvc:viewvc:*:*:*:*:*:*:*:*", "matchCriteriaId": "0C4C4AE3-6765-4AD4-991F-EF3F0B3EF39E", "versionEndExcluding": "1.2.1", "versionStartIncluding": "1.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ViewVC before versions 1.1.28 and 1.2.1 has a XSS vulnerability in CVS show_subdir_lastmod support. The impact of this vulnerability is mitigated by the need for an attacker to have commit privileges to a CVS repository exposed by an otherwise trusted ViewVC instance that also has the `show_subdir_lastmod` feature enabled. The attack vector involves files with unsafe names (names that, when embedded into an HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create. This vulnerability is patched in versions 1.2.1 and 1.1.28."}, {"lang": "es", "value": "ViewVC versiones anteriores a 1.1.28 y 1.2.1, presenta una vulnerabilidad de tipo XSS en el soporte show_subdir_lastmod de CVS. El impacto de esta vulnerabilidad est\u00e1 mitigado mediante la necesidad de que un atacante tenga privilegios de commit en un repositorio CVS expuesto por una instancia de ViewVC confiable que tambi\u00e9n tenga la funcionalidad \"show_subdir_lastmod\" habilitada. El vector de ataque involucra archivos con nombres no seguros (nombres que, cuando se insertan en una secuencia de datos HTML, causar\u00edan que el navegador ejecute un c\u00f3digo no deseado), que pueden ser en si mismos dif\u00edciles de crear. Esta vulnerabilidad est\u00e1 parcheada en las versiones 1.2.1 y 1.1.28."}], "id": "CVE-2020-5283", "lastModified": "2026-06-17T03:21:11.940", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:H/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 0.5, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-04-03T00:15:11.943", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/viewvc/viewvc/commit/ad0f966e9a997b17d853a6972ea283d4dcd70fa8"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/viewvc/viewvc/issues/211"}, {"source": "security-advisories@github.com", "tags": ["Mitigation", "Patch", "Third Party Advisory"], "url": "https://github.com/viewvc/viewvc/security/advisories/GHSA-xpxf-fvqv-7mfg"}, {"source": "security-advisories@github.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2Q2STF2MKT24HXZ3YZIU7CN6F6QM67I5/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/viewvc/viewvc/commit/ad0f966e9a997b17d853a6972ea283d4dcd70fa8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/viewvc/viewvc/issues/211"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Patch", "Third Party Advisory"], "url": "https://github.com/viewvc/viewvc/security/advisories/GHSA-xpxf-fvqv-7mfg"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2Q2STF2MKT24HXZ3YZIU7CN6F6QM67I5/"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-80"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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