CVE-2023-27371
libmicrohttpd - security update
5.9
MEDIUM
CVSS 3.1
EPSS 0.07%
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.
How to fix CVE-2023-27371
To remediate CVE-2023-27371, upgrade the affected package to a fixed version below.
- —upgrade to 0.9.72-2+deb11u1 or later
- —upgrade to 0.9.62-1+deb10u1 or later
Is CVE-2023-27371 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 0.9.72-2+deb11u1
- from 0, < 0.9.62-1+deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |