Vulnerability Details : CVE-2017-0883
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.
Products affected by CVE-2017-0883
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:10.0.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-0883
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 20 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-0883
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:N |
8.0
|
4.9
|
NIST | |
|
6.4
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
3.1
|
2.7
|
NIST |
CWE ids for CVE-2017-0883
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Assigned by: support@hackerone.com (Secondary)
-
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-0883
-
https://nextcloud.com/security/advisory/?id=nc-sa-2017-001
advisory – NextcloudPatch;Vendor Advisory
-
https://hackerone.com/reports/169680
#169680 Bypass permissionsThird Party Advisory
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