CVE-2017-17671
vBulletin through 5.3.x on Windows allows remote PHP code execution because a require_once call is reachable with an unauthenticated reques…
Published 8 y ago · modified 4 mo ago · JSON
Summary
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.
Exploit prediction (EPSS)
3.05% probability of exploitation in the next 30 days, higher than 88% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
- blogs.securiteam.com /index.php/archives/3569 · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2017-17671
- NVD: CVE-2017-17671
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