CVE-2020-8183 : A logic error in Nextcloud Server 19.0.0 caused a plaintext storage of the share

A logic error in Nextcloud Server 19.0.0 caused a plaintext storage of the share password when it was given on the initial create API call.

Published 2020-11-02 21:15:35

Updated 2022-09-27 15:49:02

Source HackerOne

View at NVD, CVE.org

Products affected by CVE-2020-8183

Nextcloud » Nextcloud Server
Versions from including (>=) 19.0.0 and before (<) 19.0.1
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
Matching versions
Nextcloud » Nextcloud Server
Versions before (<) 18.0.6
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.20%

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

~ 58 %

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

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE-256 Plaintext Storage of a Password

Storing a password in plaintext may result in a system compromise.

Assigned by: support@hackerone.com (Secondary)
CWE-522 Insufficiently Protected Credentials

The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.

Assigned by: nvd@nist.gov (Primary)

https://nextcloud.com/security/advisory/?id=NC-SA-2020-026

advisory – Nextcloud
Broken Link;Vendor Advisory
https://hackerone.com/reports/885041

#885041 The password of a mail share is not hashed if the password is given when the share is created
Exploit;Third Party Advisory

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