CVE-2020-8181 : A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user t

A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.

Published 2020-07-10 16:15:12

Updated 2020-07-17 15:44:03

Source HackerOne

View at NVD, CVE.org

Products affected by CVE-2020-8181

Nextcloud » Contacts
Versions before (<) 3.3.0
cpe:2.3:a:nextcloud:contacts:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.22%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 45 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.0	MEDIUM	AV:N/AC:L/Au:S/C:N/I:P/A:N	8.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
4.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	2.8	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: Low Availability: None

CWE-434 Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

Assigned by: nvd@nist.gov (Primary)
CWE-840

Assigned by: support@hackerone.com (Secondary)

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