CVE-2017-7725

moderate-risk
Published 2017-04-13

concrete5 8.1.0 places incorrect trust in the HTTP Host header during caching, if the administrator did not define a "canonical" URL on installation of concrete5 using the "Advanced Options" settings. Remote attackers can make a GET request with any domain name in the Host header; this is stored and allows for arbitrary domains to be set for certain links displayed to subsequent visitors, potentially an XSS vector.

Do I need to act?

~
3.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
41885
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Concretecms

References (10)

Exploit http://hyp3rlinx.altervista.org/advisories/CONCRETE5-v8.1.0-HOST-HEADER-INJECTIO...
Third Party Advisory http://www.securityfocus.com/bid/97649
Exploit https://hackerone.com/reports/148300
Exploit https://packetstormsecurity.com/files/142145/concrete5-8.1.0-Host-Header-Injecti...
Exploit https://www.exploit-db.com/exploits/41885/
Exploit http://hyp3rlinx.altervista.org/advisories/CONCRETE5-v8.1.0-HOST-HEADER-INJECTIO...
Third Party Advisory http://www.securityfocus.com/bid/97649
Exploit https://hackerone.com/reports/148300
Exploit https://packetstormsecurity.com/files/142145/concrete5-8.1.0-Host-Header-Injecti...
Exploit https://www.exploit-db.com/exploits/41885/
42
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 14/34 · Moderate
Exposure 5/34 · Minimal