CVE-2023-27371

MEDIUM

GNU Libmicrohttpd < 0.9.76 - Out-of-Bounds Read

Title source: rule
STIX 2.1

Description

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.

Scores

CVSS v3 5.9
EPSS 0.0007
EPSS Percentile 22.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-125
Status published
Products (1)
gnu/libmicrohttpd < 0.9.76
Published Feb 28, 2023
Tracked Since Feb 18, 2026