Vulnerability Description
ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info->request NULL check for certain malformed HTTP requests.
CVSS Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ulfius Project | Ulfius | < 2.7.4 |
References
- http://packetstormsecurity.com/files/164152/Ulfius-Web-Framework-Remote-Memory-CExploitThird Party AdvisoryVDB Entry
- https://github.com/babelouest/ulfius/commit/c83f564c184a27145e07c274b305cabe943bPatchThird Party Advisory
- https://github.com/babelouest/ulfius/compare/v2.7.3...v2.7.4PatchThird Party Advisory
- http://packetstormsecurity.com/files/164152/Ulfius-Web-Framework-Remote-Memory-CExploitThird Party AdvisoryVDB Entry
- https://github.com/babelouest/ulfius/commit/c83f564c184a27145e07c274b305cabe943bPatchThird Party Advisory
- https://github.com/babelouest/ulfius/compare/v2.7.3...v2.7.4PatchThird Party Advisory
FAQ
What is CVE-2021-40540?
CVE-2021-40540 is a vulnerability with a CVSS score of 9.8 (CRITICAL). ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info->request NULL check for certain malformed HTTP requests.
How severe is CVE-2021-40540?
CVE-2021-40540 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-40540?
Check the references section above for vendor advisories and patch information. Affected products include: Ulfius Project Ulfius.