1. CVE-Search
  2. CVE-2020-3524
ID CVE-2020-3524
Summary A vulnerability in the Cisco IOS XE ROM Monitor (ROMMON) Software for Cisco 4000 Series Integrated Services Routers, Cisco ASR 920 Series Aggregation Services Routers, Cisco ASR 1000 Series Aggregation Services Routers, and Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, physical attacker to break the chain of trust and load a compromised software image on an affected device. The vulnerability is due to the presence of a debugging configuration option in the affected software. An attacker could exploit this vulnerability by connecting to an affected device through the console, forcing the device into ROMMON mode, and writing a malicious pattern using that specific option on the device. A successful exploit could allow the attacker to break the chain of trust 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.
References
Vulnerable Configurations
  • cpe:2.3:o:cisco:ios_xe_rom_monitor:-:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios_xe_rom_monitor:-:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe_rom_monitor:15.6\(18r\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios_xe_rom_monitor:15.6\(18r\):*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-10sz-pd:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-10sz-pd:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-12cz-a:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-12cz-a:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-12cz-d:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-12cz-d:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-12sz-a:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-12sz-a:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-12sz-d:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-12sz-d:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-20sz-m:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-20sz-m:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-24sz-im:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-24sz-im:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-24sz-m:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-24sz-m:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-24tz-m:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-24tz-m:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-4sz-a:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-4sz-a:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr-920-4sz-d:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr-920-4sz-d:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_920u-12sz-im:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_920u-12sz-im:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_1000-x:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_1000-x:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe_rom_monitor:16.2\(1r\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios_xe_rom_monitor:16.2\(1r\):*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:cbr8:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:cbr8:-:*:*:*:*:*:*:*
CVSS
Base: 6.9 (as of 22-05-2023 - 18:57)
Impact:
Exploitability:
CWE CWE-862
CAPEC
Access
VectorComplexityAuthentication
LOCAL MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
cvss-vector via4 AV:L/AC:M/Au:N/C:C/I:C/A:C
refmap via4
cisco 20200924 Cisco IOS XE ROM Monitor Software Vulnerability
Last major update 22-05-2023 - 18:57
Published 24-09-2020 - 18:15
Last modified 22-05-2023 - 18:57
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