Description
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.
Published: 2017-12-14
Score: 9.8 Critical
EPSS: 4.7% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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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.
History

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Microsoft Windows
Vbulletin Vbulletin
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

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

Reserved: 2017-12-13T00:00:00.000Z

Link: CVE-2017-17671

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

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

Modified: 2026-05-13T00:24:29.033

Link: CVE-2017-17671

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses