CVE-2021-1531Modeling Labs Vulnerability
A vulnerability in the web UI of Cisco Modeling Labs could allow an authenticated, remote attacker to execute arbitrary commands with the privileges of the web application on the underlying operating system of an affected Cisco Modeling Labs server.
Published May 24, 2021 · Updated Nov 8, 2024
Key Facts
Patch immediately- CVE-2021-1531 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Modeling Labs (Cisco).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 30% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
30%
Higher than 98.2% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
42/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-1531
- advisory20210519 Cisco Modeling Labs Web UI Command Injection Vulnerability
- advisoryhttps://us-cert.cisa.gov/ncas/current-activity/2021/05/20/cisco-releases-security-updates-multiple-productsCisco
- advisoryhttps://www.cybersecurity-help.cz/vdb/SB2021052009
- advisoryhttps://www.cybersecurity-help.cz/vdb/SB2021052009Remote
- advisoryUSOM advisory
Description
A vulnerability in the web UI of Cisco Modeling Labs could allow an authenticated, remote attacker to execute arbitrary commands with the privileges of the web application on the underlying operating system of an affected Cisco Modeling Labs server. This vulnerability is due to insufficient validation of user-supplied input to the web UI. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected server.
A successful exploit could allow the attacker to execute arbitrary commands with the privileges of the web application, virl2, on the underlying operating system of the affected server. To exploit this vulnerability, the attacker must have valid user credentials on the web UI.
Affected Products
7 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Modeling LabsCisco | 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.1.2, 2.1.3, >= n/a | n/a |
Timeline
Publicly disclosed
May 24, 2021
Last updated
Nov 8, 2024
Weakness Type
- CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
References
- advisoryweb.nvd.nist.gov · vuln
- advisory20210519 Cisco Modeling Labs Web UI Command Injection Vulnerability
- advisoryus-cert.cisa.gov · cisco-releases-security-updates-multiple-produc…
- advisorycybersecurity-help.cz · SB2021052009
- advisorycybersecurity-help.cz · SB2021052009Remote
FAQ
Common Questions.
A vulnerability in the web UI of Cisco Modeling Labs could allow an authenticated, remote attacker to execute arbitrary commands with the privileges of the web application on the underlying operating system of an affected Cisco Modeling Labs server.
Affected: Modeling Labs (Cisco) versions 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.1.2, 2.1.3, >= n/a. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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