CVE-2018-3781

A missing sanitization of search results for an autocomplete field in NextCloud Talk <3.2.5 could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users.

CVSS v3 5.4 MEDIUM
CVSS v2.0 3.5 LOW

5.4^/10

CVSS v3 : MEDIUM

Vector : AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

3.5^/10

CVSS v2.0 : LOW

Vector : AV:N/AC:M/Au:S/C:N/I:P/A:N

Exploitability : 6.8 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://hackerone.com/reports/383117	Third Party Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2018-009	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2018-08-13 19:29

Updated : 2019-10-09 23:40

NVD link : CVE-2018-3781

Mitre link : CVE-2018-3781

CVE.ORG link : CVE-2018-3781

JSON object : View

Products Affected

nextcloud

talk

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

{"id": "CVE-2018-3781", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 3.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 6.8, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.3}]}, "published": "2018-08-13T19:29:01.997", "references": [{"url": "https://hackerone.com/reports/383117", "tags": ["Third Party Advisory"], "source": "support@hackerone.com"}, {"url": "https://nextcloud.com/security/advisory/?id=NC-SA-2018-009", "tags": ["Vendor Advisory"], "source": "support@hackerone.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-79"}]}, {"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "A missing sanitization of search results for an autocomplete field in NextCloud Talk <3.2.5 could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users."}, {"lang": "es", "value": "La falta de saneamiento de los resultados de b\u00fasqueda para un campo de autocompletado en NextCloud Talk en versiones anteriores a la 3.2.5 podr\u00eda provocar un Cross-Site Scripting (XSS) persistente que requiera la interacci\u00f3n del usuario. La falta de saneamiento solo afectaba a los nombres de usuario, por lo que los resultados de b\u00fasqueda maliciosos solo pueden ser manipulados por los usuarios autenticados."}], "lastModified": "2019-10-09T23:40:38.153", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E6CC026F-ACAC-4DD0-90C7-A920FFCC0439", "versionEndExcluding": "3.2.5"}], "operator": "OR"}]}], "sourceIdentifier": "support@hackerone.com"}