CVE-2023-39469 PaperCut NG External User Lookup Code Injection Remote Code Execution Vulnerability

What is CVE-2023-39469?

CVE-2023-39469 is a high-severity code injection vulnerability in PaperCut NG, published on 3 May 2024. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

PaperCut NG External User Lookup Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PaperCut NG. Authentication is required to exploit this vulnerability.

The specific flaw exists within the External User Lookup functionality. The issue results from the lack of proper validation of a user-supplied string before using it to execute Java code. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-21013.

Weakness: CWE-94

Which versions are affected by CVE-2023-39469?

It affects 2 products.

Products include Papercut Papercut Mf, Papercut Papercut Ng.

How do I fix CVE-2023-39469?

No fix has been published for CVE-2023-39469 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2023-39469 being exploited?

There is no known exploitation of CVE-2023-39469 in the wild and no public exploit code.

Other vulnerabilities in PaperCut NG

• CVE-2023-27350 PaperCut MF/NG Improper Access Control Exploited Critical 9.8
• CVE-2026-82078 PaperCut NG/MF Unsafe Reflection Exploited Critical 9.4
• CVE-2026-81578 PaperCut NG/MF Missing Authentication for Critical Function Exploited High 8.8
• CVE-2023-2533 PaperCut NG/MF Cross-Site Request Forgery (CSRF) Exploited High 8.4
• CVE-2023-27351 PaperCut NG/MF Improper Authentication Exploited High 8.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-h7m6-3v2j-jm33.