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131 lines
4.0 KiB
JSON
131 lines
4.0 KiB
JSON
{
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"id": "CVE-2020-26891",
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"sourceIdentifier": "cve@mitre.org",
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"published": "2020-10-19T17:15:13.220",
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"lastModified": "2020-10-26T21:30:56.057",
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"vulnStatus": "Analyzed",
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"descriptions": [
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{
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"lang": "en",
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"value": "AuthRestServlet in Matrix Synapse before 1.21.0 is vulnerable to XSS due to unsafe interpolation of the session GET parameter. This allows a remote attacker to execute an XSS attack on the domain Synapse is hosted on, by supplying the victim user with a malicious URL to the /_matrix/client/r0/auth/*/fallback/web or /_matrix/client/unstable/auth/*/fallback/web Synapse endpoints."
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},
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{
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"lang": "es",
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"value": "AuthRestServlet en Matrix Synapse versiones anteriores a 1.21.0 es vulnerable a XSS debido a la interpolaci\u00f3n insegura del par\u00e1metro GET de la sesi\u00f3n. Esto permite a un atacante remoto ejecutar un ataque XSS en el dominio en el que est\u00e1 alojado Synapse, suministrando al usuario v\u00edctima una URL maliciosa a los puntos finales de /_matrix/cliente/r0/auth/*/fallback/web o /_matrix/cliente/instable/auth/*/fallback/web Synapse"
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "REQUIRED",
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"scope": "CHANGED",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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"availabilityImpact": "NONE",
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"baseScore": 6.1,
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"baseSeverity": "MEDIUM"
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},
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"exploitabilityScore": 2.8,
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"impactScore": 2.7
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}
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],
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"cvssMetricV2": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "2.0",
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"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
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"accessVector": "NETWORK",
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"accessComplexity": "MEDIUM",
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"authentication": "NONE",
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"confidentialityImpact": "NONE",
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"integrityImpact": "PARTIAL",
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"availabilityImpact": "NONE",
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"baseScore": 4.3
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},
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"baseSeverity": "MEDIUM",
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"exploitabilityScore": 8.6,
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"impactScore": 2.9,
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"acInsufInfo": false,
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"obtainAllPrivilege": false,
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"obtainUserPrivilege": false,
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"obtainOtherPrivilege": false,
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"userInteractionRequired": true
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-79"
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}
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]
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}
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],
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"configurations": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "1.21.0",
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"matchCriteriaId": "39E3BC16-D440-463F-BC7B-B640865B60B4"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://github.com/matrix-org/synapse/pull/8444",
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"source": "cve@mitre.org",
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"tags": [
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"Issue Tracking",
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"Patch",
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"Third Party Advisory"
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]
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},
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{
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"url": "https://github.com/matrix-org/synapse/releases/tag/v1.21.2",
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"source": "cve@mitre.org",
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"tags": [
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"Release Notes",
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"Third Party Advisory"
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]
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},
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{
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"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-3x8c-fmpc-5rmq",
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"source": "cve@mitre.org",
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"tags": [
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"Patch",
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"Third Party Advisory"
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]
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},
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{
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"url": "https://matrix.org/blog/2020/10/15/synapse-1-21-2-released-and-security-advisory",
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"source": "cve@mitre.org",
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"tags": [
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"Release Notes",
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"Vendor Advisory"
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]
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}
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]
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} |