CVE-2017-17671

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.35% Top 25%
Third-Party Advisory securiteam.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://blogs.securiteam.com/index.php/archives/3569 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2017-17671?
CVE-2017-17671 has been scored as a critical severity vulnerability.
How to fix CVE-2017-17671?
To fix CVE-2017-17671, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-17671 being actively exploited in the wild?
It is possible that CVE-2017-17671 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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