CVE-2023-51771

Starnight Micro HTTP Server vulnerability

9.8 CRITICALEPSS 0.70%

Published25 Dec 2023

Description

In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Starnight Micro HTTP Serverall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Frequently asked

Is CVE-2023-51771 being actively exploited?

CVE-2023-51771 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.70%.

How severe is CVE-2023-51771?

CVE-2023-51771 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.70% probability of exploitation.

Which products are affected by CVE-2023-51771?

Affected products include Starnight Micro HTTP Server.

How do I fix CVE-2023-51771?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-51771 against the real software inventory on every managed device, as each hourly inventory arrives. 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.