National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-0883 Detail

Current Description

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Source:  MITRE
Description Last Modified:  04/05/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.4 MEDIUM
Vector: AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N (V3 legend)
Impact Score: 2.7
Exploitability Score: 3.1


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 5.5 MEDIUM
Vector: (AV:N/AC:L/Au:S/C:P/I:P/A:N) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 8.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): Single
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://hackerone.com/reports/169680 Third Party Advisory
https://nextcloud.com/security/advisory/?id=nc-sa-2017-001 Patch Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
9.0.54
 cpe:2.3:a:nextcloud:nextcloud_server:10.0.2:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-0883
NVD Published Date:
04/05/2017
NVD Last Modified:
12/18/2018