Vulnerability Details : CVE-2017-16858
The 'crowd-application' plugin module (notably used by the Google Apps plugin) in Atlassian Crowd from version 1.5.0 before version 3.1.2 allowed an attacker to impersonate a Crowd user in REST requests by being able to authenticate to a directory bound to an application using the feature. Given the following situation: the Crowd application is bound to directory 1 and has a user called admin and the Google Apps application is bound to directory 2, which also has a user called admin, it was possible to authenticate REST requests using the credentials of the user coming from directory 2 and impersonate the user from directory 1.
Vulnerability category: BypassGain privilege
Exploit prediction scoring system (EPSS) score for CVE-2017-16858
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 25 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-16858
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:N |
6.8
|
4.9
|
NIST |
|
6.8
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
1.6
|
5.2
|
NIST |
CWE ids for CVE-2017-16858
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
-
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.Assigned by: security@atlassian.com (Secondary)
References for CVE-2017-16858
-
https://jira.atlassian.com/browse/CWD-5009
[CWD-5009] REST endpoint user impersonation using authentication module functionality - CVE-2017-16858 - Create and track feature requests for Atlassian products.Issue Tracking;Vendor Advisory
Products affected by CVE-2017-16858
- cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*