// For flags

CVE-2020-27009

 

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions < V5.2), Nucleus Source Code (Versions including affected DNS modules), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name record decompression functionality does not properly validate the pointer offset values. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition.

Se ha identificado una vulnerabilidad en Nucleus NET (Todas las versiones anteriores a V5.2), Nucleus Source Code (Versiones que incluyen los módulos DNS afectados). La funcionalidad de descompresión de registros de nombres de dominio DNS no valida correctamente los valores de desplazamiento del puntero. El análisis sintáctico de respuestas malformadas podría dar lugar a una escritura más allá del final de una estructura asignada. Un atacante con una posición privilegiada en la red podría aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual o provocar una condición de denegación de servicio

*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
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
  • 2020-10-12 CVE Reserved
  • 2021-04-22 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-10-12 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
  • CWE-823: Use of Out-of-range Pointer Offset
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Siemens
Search vendor "Siemens"
 Nucleus Net
Search vendor "Siemens" for product "Nucleus Net"
 < 5.2
Search vendor "Siemens" for product "Nucleus Net" and version " < 5.2"
-
Affected
Siemens
Search vendor "Siemens"
 Nucleus Source Code
Search vendor "Siemens" for product "Nucleus Source Code"
--
Affected