// For flags

CVE-2017-17671

 

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

vBulletin hasta las versiones 5.3.x en Windows permite la ejecución remota de código PHP debido a que una llamada require_once es alcanzable con una petición que puede incluir secuencias de salto de directorio para especificar un nombre de ruta arbitrario y porque el salto ../ está bloqueado, pero el salto ..\ no lo está. Por ejemplo, un atacante puede realizar una petición HTTP inválida que contiene código PHP y, a continuación, realizar una petición index.php?routestring= con las suficientes instancias de ".." para alcanzar un archivo de registro de Apache HTTP Server.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-12-13 CVE Reserved
  • 2017-12-14 CVE Published
  • 2024-07-17 EPSS Updated
  • 2024-08-05 CVE Updated
  • 2024-08-05 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC
References (1)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Vbulletin
Search vendor "Vbulletin"
Vbulletin
Search vendor "Vbulletin" for product "Vbulletin"
>= 5.0.1 <= 5.3.3
Search vendor "Vbulletin" for product "Vbulletin" and version " >= 5.0.1 <= 5.3.3"
-
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Vbulletin
Search vendor "Vbulletin"
Vbulletin
Search vendor "Vbulletin" for product "Vbulletin"
5.0.0
Search vendor "Vbulletin" for product "Vbulletin" and version "5.0.0"
beta_11
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Vbulletin
Search vendor "Vbulletin"
Vbulletin
Search vendor "Vbulletin" for product "Vbulletin"
5.0.0
Search vendor "Vbulletin" for product "Vbulletin" and version "5.0.0"
beta_28
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe