// For flags

CVE-2018-12520

ntop-ng < 3.4.180617 - Authentication Bypass

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in ntopng 3.4 before 3.4.180617. The PRNG involved in the generation of session IDs is not seeded at program startup. This results in deterministic session IDs being allocated for active user sessions. An attacker with foreknowledge of the operating system and standard library in use by the host running the service and the username of the user whose session they're targeting can abuse the deterministic random number generation in order to hijack the user's session, thus escalating their access.

Se ha descubierto un problema en ntopng, en versiones 3.4 anteriores a la 3.4.180617. El PRNG implicado en la generación de ID de sesión no se propaga al iniciar el programa. Esto resulta en que se asignan ID de sesión deterministas para las sesiones activas de usuario. Un atacante con conocimientos del sistema operativo y biblioteca estándar en uso por parte del host que ejecuta el servicio y el nombre de usuario del usuario cuya sesión está en el punto de mira puede abusar de la generación determinista de números aleatorios para secuestrar la sesión del usuario y escalando su acceso.

ntop-ng versions prior to 3.4.180617 suffer from a deterministic session ID vulnerability.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-06-17 CVE Reserved
  • 2018-07-02 CVE Published
  • 2024-04-19 EPSS Updated
  • 2024-08-05 CVE Updated
  • 2024-08-05 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-335: Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Ntop
Search vendor "Ntop"
 Ntopng
Search vendor "Ntop" for product "Ntopng"
 >= 3.4 < 3.4.180617
Search vendor "Ntop" for product "Ntopng" and version " >= 3.4 < 3.4.180617"
-
Affected