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.
Published 2018-01-31 14:29:01
Updated 2019-10-09 23:25:21
Source Atlassian
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

Exploit prediction scoring system (EPSS) score for CVE-2017-16858

EPSS FAQ
0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-16858

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
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

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