CVE-2021-22879

Nextcloud Desktop Client prior to 3.1.3 is vulnerable to resource injection by way of missing validation of URLs, allowing a malicious server to execute remote commands. User interaction is needed for exploitation.

CVSS v3 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/nextcloud/desktop/pull/2906	Patch Third Party Advisory
https://hackerone.com/reports/1078002	Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTWBJAS5DJJIK7LLVBZZQTSJASUVIRVE/
https://nextcloud.com/security/advisory/?id=NC-SA-2021-008	Vendor Advisory
https://security.gentoo.org/glsa/202105-37	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

History

07 Nov 2023, 03:30

Type	Values Removed	Values Added
References	{'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MTWBJAS5DJJIK7LLVBZZQTSJASUVIRVE/', 'name': 'FEDORA-2021-1ffffa0251', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTWBJAS5DJJIK7LLVBZZQTSJASUVIRVE/ -

Information

Published : 2021-04-14 13:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-22879

Mitre link : CVE-2021-22879

CVE.ORG link : CVE-2021-22879

JSON object : View

Products Affected

nextcloud

desktop

fedoraproject

fedora

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-99

Improper Control of Resource Identifiers ('Resource Injection')

{"id": "CVE-2021-22879", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2021-04-14T13:15:13.040", "references": [{"url": "https://github.com/nextcloud/desktop/pull/2906", "tags": ["Patch", "Third Party Advisory"], "source": "support@hackerone.com"}, {"url": "https://hackerone.com/reports/1078002", "tags": ["Exploit", "Third Party Advisory"], "source": "support@hackerone.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTWBJAS5DJJIK7LLVBZZQTSJASUVIRVE/", "source": "support@hackerone.com"}, {"url": "https://nextcloud.com/security/advisory/?id=NC-SA-2021-008", "tags": ["Vendor Advisory"], "source": "support@hackerone.com"}, {"url": "https://security.gentoo.org/glsa/202105-37", "tags": ["Third Party Advisory"], "source": "support@hackerone.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-74"}]}, {"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-99"}]}], "descriptions": [{"lang": "en", "value": "Nextcloud Desktop Client prior to 3.1.3 is vulnerable to resource injection by way of missing validation of URLs, allowing a malicious server to execute remote commands. User interaction is needed for exploitation."}, {"lang": "es", "value": "Nextcloud Desktop Client versiones anteriores a 3.1.3, es vulnerable a una inyecci\u00f3n de recursos debido a una falta de comprobaci\u00f3n de las URL, permitiendo a un servidor malicioso ejecutar comandos remotos. Una interacci\u00f3n del usuario es necesaria para su explotaci\u00f3n"}], "lastModified": "2023-11-07T03:30:27.393", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6B91F382-D9ED-4928-90D2-3ED9DBFAF550", "versionEndExcluding": "3.1.3"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"}], "operator": "OR"}]}], "sourceIdentifier": "support@hackerone.com"}