Description
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.
Published: 2020-09-24
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2020-24795 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.
History

Wed, 13 Nov 2024 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Cisco 4221 Integrated Services Router 4331 Integrated Services Router 4431 Integrated Services Router 4461 Integrated Services Router Asr-920-10sz-pd Asr-920-12cz-a Asr-920-12cz-d Asr-920-12sz-a Asr-920-12sz-d Asr-920-20sz-m Asr-920-24sz-im Asr-920-24sz-m Asr-920-24tz-m Asr-920-4sz-a Asr-920-4sz-d Asr 1000-x Asr 1001 Asr 1001-x Asr 1002 Asr 1002-x Asr 1004 Asr 1006 Asr 1013 Asr 920u-12sz-im Cbr8 Ios Xe Rom Monitor
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-13T18:01:19.136Z

Reserved: 2019-12-12T00:00:00.000Z

Link: CVE-2020-3524

cve-icon Vulnrichment

Updated: 2024-08-04T07:37:54.648Z

cve-icon NVD

Status : Modified

Published: 2020-09-24T18:15:21.620

Modified: 2024-11-21T05:31:14.970

Link: CVE-2020-3524

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses