Vulnerability CVE-2017-18195
Published: 2018-02-26

Description:
An issue was discovered in tools/conversations/view_ajax.php in Concrete5 before 8.3.0. An unauthenticated user can enumerate comments from all blog posts by POSTing requests to /index.php/tools/required/conversations/view_ajax with incremental 'cnvID' integers.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Concrete5 < 8.3.0 Username / Comments Enumeration
Chapman Schleiss
28.02.2018

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Concrete5 -> Concrete5 

 References:
https://github.com/concrete5/concrete5/pull/6008/files
https://github.com/concrete5/concrete5/releases/tag/8.3.0
https://github.com/r3naissance/NSE/blob/master/http-vuln-cve2017-18195.nse
https://www.exploit-db.com/exploits/44194/
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