Input validation error in GNU Libmicrohttpd - CVE-2023-27371

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Main Vulnerability Database Vulnerabilities #VU74198

Input validation error in GNU Libmicrohttpd - CVE-2023-27371

Published: March 30, 2023


Vulnerability identifier: #VU74198
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-27371
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of multipart/form-data data within the MHD_create_post_processor() method in the postprocessor.c. A remote attacker can send a specially crafted HTTP POST request to the server and perform a denial of service (DoS) attack.


Affected software

GNU Libmicrohttpd
Oracle Linux
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
openSUSE Leap Micro
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Anolis OS
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Desktop Applications Module
Basesystem Module
openSUSE Leap
openEuler
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
libmicrohttpd-debugsource
libmicrohttpd-devel
libmicrohttpd10-debuginfo
libmicrohttpd10
libmicrohttpd12-debuginfo
libmicrohttpd12
libmicrohttpd (Red Hat package)
libmicrohttpd-doc
libmicrohttpd
libmicrohttpd-debuginfo
libmicrohttpd-help

How to mitigate CVE-2023-27371

Install update from vendor's website.

GNU Libmicrohttpd - update to 0.9.76
libmicrohttpd-debugsource - addressed in versions 0.9.30-6.3.1, 0.9.57-150000.3.3.1
libmicrohttpd-devel - addressed in versions 0.9.30-6.3.1, 0.9.57-150000.3.3.1
libmicrohttpd10-debuginfo - update to 0.9.30-6.3.1
libmicrohttpd10 - update to 0.9.30-6.3.1
libmicrohttpd12-debuginfo - update to 0.9.57-150000.3.3.1
libmicrohttpd12 - update to 0.9.57-150000.3.3.1
libmicrohttpd (Red Hat package) - addressed in versions 0.9.59-2.el8_6.1, 0.9.59-2.el8_8.1, 0.9.59-3.el8, 0.9.72-5.el9
libmicrohttpd-doc - update to 0.9.59-3
libmicrohttpd-devel - update to 0.9.59-3
libmicrohttpd - update to 0.9.59-3
libmicrohttpd-debugsource - update to 0.9.59-8
libmicrohttpd-devel - update to 0.9.59-8
libmicrohttpd-debuginfo - update to 0.9.59-8
libmicrohttpd-help - update to 0.9.59-8
libmicrohttpd - update to 0.9.59-8

External References

Related Security Bulletins