Amazon Linux 2 Security Advisory: ALAS-2023-2135
Advisory Release Date: 2023-07-17 17:39 Pacific
Advisory Updated Date: 2023-07-19 22:20 Pacific
Severity:
Medium
Issue Overview:
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. (CVE-2023-27371)
Affected Packages:
libmicrohttpd
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update libmicrohttpd to update your system.
New Packages:
aarch64:
libmicrohttpd-0.9.33-2.amzn2.0.3.aarch64
libmicrohttpd-devel-0.9.33-2.amzn2.0.3.aarch64
libmicrohttpd-debuginfo-0.9.33-2.amzn2.0.3.aarch64
i686:
libmicrohttpd-0.9.33-2.amzn2.0.3.i686
libmicrohttpd-devel-0.9.33-2.amzn2.0.3.i686
libmicrohttpd-debuginfo-0.9.33-2.amzn2.0.3.i686
noarch:
libmicrohttpd-doc-0.9.33-2.amzn2.0.3.noarch
src:
libmicrohttpd-0.9.33-2.amzn2.0.3.src
x86_64:
libmicrohttpd-0.9.33-2.amzn2.0.3.x86_64
libmicrohttpd-devel-0.9.33-2.amzn2.0.3.x86_64
libmicrohttpd-debuginfo-0.9.33-2.amzn2.0.3.x86_64