1. CVE-Search
  2. CVE-2020-3455
ID CVE-2020-3455
Summary A vulnerability in the secure boot process of Cisco FXOS Software could allow an authenticated, local attacker to bypass the secure boot mechanisms. The vulnerability is due to insufficient protections of the secure boot process. An attacker could exploit this vulnerability by injecting code into a specific file that is then referenced during the device boot process. A successful exploit could allow the attacker to break the chain of trust and inject code into the boot process of the device which would be executed at each boot and maintain persistence across reboots.
References
Vulnerable Configurations
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:-:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:-:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:1.1\(1.86\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:1.1\(1.86\):*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:1.1\(1.160\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:1.1\(1.160\):*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:1.1.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:1.1.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2\(1.58\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2\(1.58\):*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4110:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4110:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4112:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4112:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4115:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4115:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4120:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4120:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4125:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4125:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4140:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4140:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4145:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4145:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4150:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4150:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_sm-24:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_sm-24:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_sm-36:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_sm-36:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_sm-40:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_sm-40:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_sm-44:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_sm-44:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_sm-44_x_3:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_sm-44_x_3:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_sm-48:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_sm-48:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_sm-56:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_sm-56:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_sm-56_x_3:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_sm-56_x_3:-:*:*:*:*:*:*:*
CVSS
Base: 7.2 (as of 28-10-2020 - 20:52)
Impact:
Exploitability:
CWE NVD-CWE-Other
CAPEC
Access
VectorComplexityAuthentication
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
cvss-vector via4 AV:L/AC:L/Au:N/C:C/I:C/A:C
refmap via4
cisco 20201021 Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability
Last major update 28-10-2020 - 20:52
Published 21-10-2020 - 19:15
Last modified 28-10-2020 - 20:52
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