MEDIUM 5.9 Microsoft

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.

Microsoft Security Update 2023-Feb: 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.

Affected Products

References

Published: 2023-02-14 · Source: Microsoft · Feed updated: 2026-08-20
This medium severity vulnerability with a CVSS score of 5.9 was published on 2023-02-14 via Microsoft. Affected: cbl2 libmicrohttpd 0.9.76-1 on CBL Mariner 2.0.
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