CVE-2017-17671

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published12/14/2017

Last Modified4/20/2025

Sourcenvd

Honeypot Sightings0

Affected Products

microsoft:windowsvbulletin:vbulletin

Weaknesses (CWE)

CWE-22

References

https://blogs.securiteam.com/index.php/archives/3569(cve@mitre.org)

https://blogs.securiteam.com/index.php/archives/3569(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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