Vulnerability Report

CVE-2016-2564

Title: Invisioncommunity Invision Power Board

Other

Proof Of Concept

No public PoC currently indexed for CVE-2016-2564.

CWE Category CWE-331

Published Date Apr 23, 2017

Modified Date May 13, 2026

Exploit Status Not Found

Score 5.9 CVSS v3.0

Exploit Probability (EPSS)

1.27%

Vulnerability Summary

CVE-2016-2564: Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying on the PHP uniqid function without the more_entropy flag. Attackers can guess an Invision Power Board session cookie if they can predict the exact time of cookie generation.

Impacted Vendors

invision_power_services 1

invisioncommunity 1

Reference Links

https://invisionpower.com/release-notes/419-r37/ https://medium.com/%40iancarroll/bypassing-authentication-in-invision-power-board-with-cve-2016-2564-9a24ea3655f9 https://invisionpower.com/release-notes/419-r37/ https://medium.com/%40iancarroll/bypassing-authentication-in-invision-power-board-with-cve-2016-2564-9a24ea3655f9

CVSS v3.0

Source Entity [email protected]

Severity MEDIUM

5.9

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns