Cyber Resilience

CVE-2023-50917

RCE in Mjdm Majordomo ≤ 2023-11-15

Public PoCRCECommand Injection
Published
15 December 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.38 98th percentile
Risk Priority 97 floored blend · peak EPSS

Summary

CVE-2023-50917 is a critical-severity Command Injection (CWE-77) vulnerability in Mjdm Majordomo. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

MajorDoMo, also known as Major Domestic Module, is affected by CVE-2023-50917 prior to commit 0662e5e. The flaw is a command injection vulnerability (CWE-77) that permits arbitrary command execution through shell metacharacters supplied to thumb.php. It carries a CVSS 3.1 score of 9.8 and is unrelated to the Majordomo mailing-list software.

Unauthenticated attackers with network access can exploit the issue without user interaction or credentials. Successful exploitation grants full control over the affected system, including the ability to read, modify, or delete data and execute code with the privileges of the web server process.

Public exploit code has been disclosed via Packet Storm and the Full Disclosure mailing list, while the project addressed the flaw in commits 0662e5ebfb133445ff6154b69c61019357092178 and 3ec3ffb863ea3c2661ab27d398776c551f4daaac. The associated EPSS score remains elevated near its recorded peak of 0.9275, indicating sustained exploitation interest after public disclosure.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

MajorDoMo (aka Major Domestic Module) before 0662e5e allows command execution via thumb.php shell metacharacters. NOTE: this is unrelated to the Majordomo mailing-list manager.

CWE(s)
CWE-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 →
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 →
T1059.008 Network Device CLI Execution
Adversaries may abuse scripting or built-in command line interpreters (CLI) on network devices to execute malicious command and payloads.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-27175Same product: Mjdm Majordomo
CVE-2026-27174Same product: Mjdm Majordomo
CVE-2026-27181Same product: Mjdm Majordomo
CVE-2026-27179Same product: Mjdm Majordomo
CVE-2026-27178Same product: Mjdm Majordomo
CVE-2026-27177Same product: Mjdm Majordomo
CVE-2026-27176Same product: Mjdm Majordomo
CVE-2026-27180Same product: Mjdm Majordomo
CVE-2024-53672Shared CWE-77
CVE-2024-38228Shared CWE-77

Affected Assets

mjdm
majordomo
≤ 2023-11-15

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 input validation and neutralization that prevent command injection.

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 catches command-injection vulnerabilities before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates input validation and command construction practices that directly prevent command injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against injection flaws including command injection.

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