vBulletin through 5.3.x on Windows allows remote PHP code execution because a require_once call is reachable with an unauthenticated request that can include directory traversal sequences to specify an arbitrary pathname, and because ../ traversal is blocked but ..\ traversal is not blocked. For example, an attacker can make an invalid HTTP request containing PHP code, and then make an index.php?routestring= request with enough instances of ".." to reach an Apache HTTP Server log file.
Advisories
Source ID Title
EUVD EUVD EUVD-2017-8828 vBulletin through 5.3.x on Windows allows remote PHP code execution because a require_once call is reachable with an unauthenticated request that can include directory traversal sequences to specify an arbitrary pathname, and because ../ traversal is blocked but ..\ traversal is not blocked. For example, an attacker can make an invalid HTTP request containing PHP code, and then make an index.php?routestring= request with enough instances of ".." to reach an Apache HTTP Server log file.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T20:59:17.456Z

Reserved: 2017-12-13T00:00:00

Link: CVE-2017-17671

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2017-12-14T00:29:00.217

Modified: 2025-04-20T01:37:25.860

Link: CVE-2017-17671

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.