Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Libmicrohttpd | < 0.9.76 |
Related Weaknesses (CWE)
References
- https://git.gnunet.org/libmicrohttpd.git/commit/?id=6d6846e20bfdf4b3eb1b592c9752Patch
- https://github.com/0xhebi/CVEs/tree/main/GNU%20LibmicrohttpdExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00029.html
- https://lists.gnu.org/archive/html/libmicrohttpd/2023-02/msg00000.htmlMailing List
- https://git.gnunet.org/libmicrohttpd.git/commit/?id=6d6846e20bfdf4b3eb1b592c9752Patch
- https://github.com/0xhebi/CVEs/tree/main/GNU%20LibmicrohttpdExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00029.html
- https://lists.gnu.org/archive/html/libmicrohttpd/2023-02/msg00000.htmlMailing List
FAQ
What is CVE-2023-27371?
CVE-2023-27371 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 a...
How severe is CVE-2023-27371?
CVE-2023-27371 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-27371?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Libmicrohttpd.