Cyber Resilience

CVE-2024-42738

HighPublic PoCRCE

Published: 13 August 2024

Published
13 August 2024
Modified
14 August 2024
KEV Added
—
Patch
—
CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0542 90.4th percentile
Risk Priority 21 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-42738 is a high-severity OS Command Injection (CWE-78) vulnerability in Totolink X5000R Firmware. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Network Device CLI (T1059.008); ranked in the top 9.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis

CVE-2024-42738 is an OS command injection vulnerability, tracked under CWE-78, that affects the TOTOLINK X5000r router running firmware version 9.1.0cu.2350_b20230313. The flaw resides in the setDmzCfg function within the /cgi-bin/cstecgi.cgi endpoint and permits injection of operating-system commands.

Authenticated attackers with network access can exploit the issue by sending crafted packets to the device. Successful exploitation grants the ability to execute arbitrary commands, resulting in full compromise of confidentiality, integrity, and availability as reflected in the CVSS 8.8 score (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

The single available reference is a technical report describing the injection vector; it contains no vendor advisory, patch information, or mitigation guidance. The associated EPSS score has remained flat at 0.0542 with no material increase since disclosure.

EU & UK References

Vulnerability details

In TOTOLINK X5000r v9.1.0cu.2350_b20230313, the file /cgi-bin/cstecgi.cgi contains an OS command injection vulnerability in setDmzCfg. Authenticated Attackers can send malicious packet to execute arbitrary commands.

CWE(s)
CWE-78

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

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 →
Why these techniques?

OS command injection vulnerability in the router's CGI interface (setDmzCfg) enables authenticated attackers to execute arbitrary OS commands, directly facilitating Network Device CLI abuse.

Affected Assets

totolink
x5000r firmware
9.1.0u.6369_b20230113

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References