CVE-2023-32781
Published: 09 August 2023
Summary
CVE-2023-32781 is a high-severity Command Injection (CWE-77) vulnerability in Paessler Prtg Network Monitor. Its CVSS base score is 7.2 (High).
Operationally, ranked in the top 2.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A command injection vulnerability exists in Paessler PRTG Network Monitor versions 23.2.84.1566 and earlier, specifically within the HL7 sensor. An authenticated user with write permissions can abuse the sensor's debug option to create arbitrary files on the system that may subsequently be executed through the EXE/Script sensor, corresponding to CWE-77 and carrying a CVSS 3.1 score of 7.2.
An attacker who already possesses valid credentials with sufficient write access can leverage this flaw to achieve remote code execution on the PRTG server. The attack requires network reachability to the monitoring instance but does not need user interaction or special privileges beyond those write permissions.
Paessler has addressed the issue, along with other vulnerabilities, in PRTG version 23.3.86.1520, as documented in the vendor's knowledge-base article. Public proof-of-concept code demonstrating authenticated remote code execution has been published on Packet Storm. The associated EPSS score currently stands at 0.4722 with a recorded peak of 0.4893.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-37004
Vulnerability details
A command injection vulnerability was identified in PRTG 23.2.84.1566 and earlier versions in the HL7 sensor where an authenticated user with write permissions could abuse the debug option to write new files that could potentially get executed by the EXE/Script…
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sensor. The severity of this vulnerability is high and received a score of 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.