CVE-2021-3122
CriticalExploitedPublic exploitCMCAgent in NCR Command Center Agent 16.3 on Aloha POS/BOH servers permits the submission of a runCommand parameter (within an XML document sent to port 8089) that enables the remote, unauthenticated execution of an arbitrary command as SYSTEM, as exploited in the wild in 2020…
Published Feb 7, 2021 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2021-3122 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Command Center Agent (Ncr).
- It is exploited in the wild, listed in Industry KEV feed since Feb 7, 2021. Public exploit code is available.
- EPSS estimates a 87% 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 it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
87%
Higher than 99.7% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
CMCAgent in NCR Command Center Agent 16.3 on Aloha POS/BOH servers permits the submission of a runCommand parameter (within an XML document sent to port 8089) that enables the remote, unauthenticated execution of an arbitrary command as SYSTEM, as exploited in the wild in 2020 and/or 2021. NOTE: the vendor's position is that exploitation occurs only on devices with a certain "misconfiguration."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Feb 7, 2021 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Command Center AgentNcr | 16.3 | n/a |
Timeline
Publicly disclosed
Feb 7, 2021
Added to Industry KEV feed
Feb 7, 2021
Last updated
Nov 21, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- advisoryhttps://github.com/roughb8722/CVE-2021-3122-Details/blob/main/CVE-2021-3122
- advisoryhttps://rdf2.alohaenterprise.com/client/CMCInst.zip
- advisoryhttps://www.tetradefense.com/incident-response-services/active-exploit-a-remote-code-execution-rce-vulnerability-for-ncr-aloha-point-of-sale/
- exploitMSF ncr_cmcagent_rce.rb
- exploitVulnCheck exploitation report
FAQ
Common Questions.
CMCAgent in NCR Command Center Agent 16.3 on Aloha POS/BOH servers permits the submission of a runCommand parameter (within an XML document sent to port 8089) that enables the remote, unauthenticated execution of an arbitrary command as SYSTEM, as exploited in the wild in 2020 and/or 2021.
Affected: Command Center Agent (Ncr) versions 16.3. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Feb 7, 2021.
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 it is listed as exploited in the wild.
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