// For flags

CVE-2025-2245

Server Side Request Forgery in GravityZone Update Server Using Null Bytes (VA-12646)

Severity Score

6.9
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A server-side request forgery (SSRF) vulnerability exists in the Bitdefender GravityZone Update Server when operating in Relay Mode. The HTTP proxy component on port 7074 uses a domain allowlist to restrict outbound requests, but fails to properly sanitize hostnames containing null-byte (%00) sequences. By crafting a request to a domain such as evil.com%00.bitdefender.com, an attacker can bypass the allowlist check, causing the proxy to forward requests to arbitrary external or internal systems.

Existe una vulnerabilidad de server-side request forgery (SSRF) en Bitdefender GravityZone Update Server al operar en modo de retransmisión. El componente proxy HTTP en el puerto 7074 utiliza una lista de permitidos de dominio para restringir las solicitudes salientes, pero no depura correctamente los nombres de host que contienen secuencias de bytes nulos (%00). Al manipular una solicitud a un dominio como evil.com%00.bitdefender.com, un atacante puede eludir la comprobación de la lista de permitidos, lo que provoca que el proxy reenvíe las solicitudes a sistemas externos o internos arbitrarios.

*Credits: Nicolas Verdier (@n1nj4sec)
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
Low
Low
Integrity
None
Low
Availability
None
Low
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-03-12 CVE Reserved
  • 2025-04-04 CVE Published
  • 2025-04-04 CVE Updated
  • 2025-04-05 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-918: Server-Side Request Forgery (SSRF)
CAPEC
  • CAPEC-3: Using Leading 'Ghost' Character Sequences to Bypass Input Filters
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Bitdefender
Search vendor "Bitdefender"
 GravityZone Update Server
Search vendor "Bitdefender" for product "GravityZone Update Server"
 < 3.5.2.689
Search vendor "Bitdefender" for product "GravityZone Update Server" and version " < 3.5.2.689"
en
Affected