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Medium ALAS2023-2025-1133 1 CVE

Moderate: libmicrohttpd security update (Amazon Linux 2023)

Published Jul 29, 2025 · Updated Aug 8, 2025

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: 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.

Fixed packages 5

ReleasePackageFixed in
Amazon Linux · 2023 libmicrohttpd 1:0.9.73-1.amzn2023.0.4
Amazon Linux · 2023 libmicrohttpd-debuginfo 1:0.9.73-1.amzn2023.0.4
Amazon Linux · 2023 libmicrohttpd-debugsource 1:0.9.73-1.amzn2023.0.4
Amazon Linux · 2023 libmicrohttpd-devel 1:0.9.73-1.amzn2023.0.4
Amazon Linux · 2023 libmicrohttpd-doc 1:0.9.73-1.amzn2023.0.4

Vulnerabilities 1

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-27371.html