Buffer overflow in GNU Libmicrohttpd - CVE-2021-3466

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Main Vulnerability Database Vulnerabilities #VU52879

Buffer overflow in GNU Libmicrohttpd - CVE-2021-3466

Published: May 5, 2021


Vulnerability identifier: #VU52879
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-3466
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: GNU
Affected software:
GNU Libmicrohttpd

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the post_process_urlencoded () function. A remote attacker can create a specially crafted HTTP POST request to the application, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


How to mitigate CVE-2021-3466

Install updates from vendor's website.

Sources