CVE-2017-0897 Information

Description

ExpressionEngine version 2.x 2.11.8 and version 3.x 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/99242 https://docs.expressionengine.com/latest/about/changelog.htmlversion-3-5-5 https://docs.expressionengine.com/v2/about/changelog.htmlversion-2-11-8 https://expressionengine.com/blog/expressionengine-3.5.5-and-2.11.8-released https://hackerone.com/reports/215890

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5