CVE-2020-3524
"Cisco ROMMON Software Debugging Option Unauthenticated Remote Code Execution Vulnerability"
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.
INFO
Published Date :
Sept. 24, 2020, 6:15 p.m.
Last Modified :
Nov. 21, 2024, 5:31 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.9
Affected Products
The following products are affected by CVE-2020-3524
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-3524.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-3524 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-3524 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rommon-secboot-7JgVLVYC -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Oct. 08, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rommon-secboot-7JgVLVYC No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rommon-secboot-7JgVLVYC Vendor Advisory Added CWE NIST CWE-862 Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios_xe_rom_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 16.2\(1r\) OR cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios_xe_rom_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 15.6\(18r\) OR 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-d:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr-920-12sz-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr-920-12sz-d:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr-920-20sz-m:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr-920-24sz-im:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr-920-24sz-m:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr-920-24tz-m:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr-920-4sz-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr-920-4sz-d:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_920u-12sz-im:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios_xe_rom_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 16.2\(1r\) OR cpe:2.3:h:cisco:asr_1000-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios_xe_rom_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 16.4\(1r\)s OR cpe:2.3:h:cisco:cbr8:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-3524 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-3524
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} 0.01%
score
0.28824
percentile