// For flags

CVE-2018-15370

Cisco Catalyst 6800 Series Switches ROM Monitor Software Secure Boot Bypass Vulnerability

Severity Score

6.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in Cisco IOS ROM Monitor (ROMMON) Software for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, local attacker to bypass Cisco Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to the presence of a hidden command in the affected software. An attacker could exploit this vulnerability by connecting to an affected device via the console, forcing the device into ROMMON mode, and writing a malicious pattern to a specific memory address on the device. A successful exploit could allow the attacker to bypass signature validation checks by Cisco Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.

Una vulnerabilidad en Cisco IOS ROM Monitor (ROMMON) Software para switches Cisco Catalyst 6800 Series podría permitir que un atacante no autenticado local omita las comprobaciones de validación de Cisco Secure Boot y cargue una imagen de software comprometida en un dispositivo afectado. Esta vulnerabilidad se debe a la presencia de un comando oculto en el software afectado. Un atacante podría explotar esta vulnerabilidad conectándose a un dispositivo afectado mediante la consola, forzando al dispositivo a entrar en modo ROMMON y escribiendo un patrón malicioso a una dirección de memoria específica en el dispositivo. Su explotación con éxito podría permitir que el atacante omita las comprobaciones de validación de firmas de la tecnología Cisco Secure Boot y cargue una imagen de software comprometida en el dispositivo afectado. Una imagen de software comprometida es cualquier imagen de software que no ha sido firmada digitalmente por Cisco.

*Credits: N/A
CVSS Scores
Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
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
  • 2018-08-17 CVE Reserved
  • 2018-10-05 CVE Published
  • 2024-02-17 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-264: Permissions, Privileges, and Access Controls
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Ios Rom Monitor
Search vendor "Cisco" for product "Ios Rom Monitor"
 15.1\(2\)sy3
Search vendor "Cisco" for product "Ios Rom Monitor" and version "15.1\(2\)sy3"
-
Affected