CVE-2024-39943

Rejetto HTTP File Server vulnerability

9.9 CRITICALEPSS 39.5%

Published4 Jul 2024

Description

rejetto HFS (aka HTTP File Server) 3 before 0.52.10 on Linux, UNIX, and macOS allows OS command execution by remote authenticated users (if they have Upload permissions). This occurs because a shell is used to execute df (i.e., with execSync instead of spawnSync in child_process in Node.js).

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredLow

User interactionNone

ScopeChanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Rejetto HTTP File Server< 0.52.10

Remediation

Fixed in

Rejetto HTTP File Server≥ 0.52.10

Frequently asked

Is CVE-2024-39943 being actively exploited?

CVE-2024-39943 is not in the CISA KEV catalog. Its EPSS exploit probability is 39.5%.

How severe is CVE-2024-39943?

CVE-2024-39943 has a CVSS 3.1 base score of 9.9, rated critical. EPSS estimates a 39.5% probability of exploitation.

Which products are affected by CVE-2024-39943?

Affected products include Rejetto HTTP File Server.

How do I fix CVE-2024-39943?

Upgrade affected software to a fixed version, for example Rejetto HTTP File Server 0.52.10 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-39943 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.