CVE-2017-7725: 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…

PriorityP337medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

EXPLOIT

EPSS

2.75%

84.4th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
concrete5	concrete5	0 – 8.1.0	—
concretecms	concrete_cms	—	—

CVSS provenance

nvdv3.16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

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