Medium severity · published Apr 23, 2017
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
5.9
CVSS
1.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IP
Invision Power Board · Invisioncommunity
through 4.1.8.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-2564
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-2564
Release Notes
https://invisionpower.com/release-notes/419-r37/
medium.com
https://medium.com/%40iancarroll/bypassing-authentication-in-invision-power-board-with-cve-2016-2564-9a24ea3655f9
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