Cyber Resilience

CVE-2023-31208

RCE in Checkmk 2.0.0 … 2.2.0

RCECommand Injection
Published
17 May 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 8.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
EPSS Score 0.0097 59th percentile
Risk Priority 64 floored blend · peak EPSS

Summary

CVE-2023-31208 is a high-severity Improper Neutralization of Delimiters (CWE-140) vulnerability in Checkmk Checkmk. Its CVSS base score is 8.3 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 41% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

Improper neutralization of livestatus command delimiters in the RestAPI in Checkmk < 2.0.0p36, < 2.1.0p28, and < 2.2.0b8 (beta) allows arbitrary livestatus command execution for authorized users.

CWE(s)
CWE-140CWE-77

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1659 Content Injection Initial Access
Adversaries may gain access and continuously communicate with victims by injecting malicious content into systems through online network traffic.
attack.mitre.org →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-22288Same product: Checkmk Checkmk
CVE-2023-31209Same product: Checkmk Checkmk
CVE-2023-0284Same product: Checkmk Checkmk
CVE-2023-6735Same product: Checkmk Checkmk
CVE-2023-22348Same product: Checkmk Checkmk
CVE-2023-31211Same product: Checkmk Checkmk
CVE-2023-6740Same product: Checkmk Checkmk
CVE-2023-1768Same product: Checkmk Checkmk
CVE-2026-33456Same product: Checkmk Checkmk
CVE-2023-6156Same product: Checkmk Checkmk

Affected Assets

checkmk
checkmk
2.0.0, 2.1.0, 2.2.0
tribe29
checkmk
≤ 2.0.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.3
  • V1.2.5
  • V1.2.8
  • V1.2.9

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require proper delimiter neutralization during input handling and output encoding.

DE.CM-09 partial match
prevents

Runtime monitoring of software and data can detect anomalous command execution resulting from injection.

ID.RA-01 partial match
prevents

Identifying recorded vulnerabilities enables remediation of command-injection flaws before exploitation.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding mostly match
prevents

Secure coding standards require proper escaping and parameterization of commands, directly eliminating CWE-77.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development and acceptance can detect delimiter-related weaknesses before deployment.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle incorporates practices that reduce the likelihood of delimiter-neutralization defects.

A.8.26 Application security requirements partial match
prevents

Application security requirements include input validation and output encoding that mitigate delimiter mishandling.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce the attack surface but do not prescribe the specific neutralization techniques needed.

A.8.31 Separation of development, test and production environments none match
none

Environment separation limits the blast radius of an exploited command injection but does not prevent the flaw itself.

References