#VU56667 Inconsistent interpretation of HTTP requests in mitmproxy - CVE-2021-39214
Published: September 16, 2021
Vulnerability identifier: #VU56667
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-39214
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
mitmproxy
mitmproxy
Software vendor:
mitmproxy.org
mitmproxy.org
Description
The vulnerability allows a remote attacker to preform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of HTTP requests. A remote attacker can send a specially crafted HTTP request to the proxy server and smuggle arbitrary HTTP headers.
Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.
The vulnerability can be exploited by both, a malicious server and client.
Remediation
Install updates from vendor's website.