CVE-2017-18106 Information

Description

The identifier_hash for a session token in Atlassian Crowd before version 2.9.1 could potentially collide with an identifier_hash for another user or a user in a different directory this allows remote attackers who can authenticate to Crowd or an application using Crowd for authentication to gain access to another user’s session provided they can make their identifier hash collide with another user’s session identifier hash.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://jira.atlassian.com/browse/CWD-5061

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.5