CVE-2023-27371

GNU libmicrohttpd before 0.9.76 allows remote DoS (Denial of Service) due to improper parsing of a multipart/form-data boundary in the postprocessor.c MHD_create_post_processor() method. This allows an attacker to remotely send a malicious HTTP POST packet that includes one or more '\0' bytes in a multipart/form-data boundary field, which - assuming a specific heap layout - will result in an out-of-bounds read and a crash in the find_boundary() function.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.gnunet.org/libmicrohttpd.git/commit/?id=6d6846e20bfdf4b3eb1b592c97520a532f724238	Patch
https://github.com/0xhebi/CVEs/tree/main/GNU%20Libmicrohttpd	Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/03/msg00029.html
https://lists.gnu.org/archive/html/libmicrohttpd/2023-02/msg00000.html	Mailing List
https://git.gnunet.org/libmicrohttpd.git/commit/?id=6d6846e20bfdf4b3eb1b592c97520a532f724238	Patch
https://github.com/0xhebi/CVEs/tree/main/GNU%20Libmicrohttpd	Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/03/msg00029.html
https://lists.gnu.org/archive/html/libmicrohttpd/2023-02/msg00000.html	Mailing List
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:libmicrohttpd:*:*:*:*:*:*:*:*

History

14 Oct 2026, 23:17

Type	Values Removed	Values Added
References		() https://cert-portal.siemens.com/productcert/html/ssa-398330.html -

Information

Published : 2023-02-28 20:15

Updated : 2026-10-14 23:17

NVD link : CVE-2023-27371

Mitre link : CVE-2023-27371

CVE.ORG link : CVE-2023-27371

JSON object : View

Products Affected

gnu

libmicrohttpd

CWE

CWE-125

Out-of-bounds Read

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