SB2022030317 - HTTP request smuggling in Netty

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Main Vulnerability Database SB2022030317

SB2022030317 - HTTP request smuggling in Netty

Published: March 3, 2022

Security Bulletin ID SB2022030317
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2022-0552)

The vulnerability allows a remote attacker to preform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests in io.netty:netty-codec-http2 in Netty, if the request only uses a single Http2HeaderFrame with the endStream set to to true. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Note, the vulnerability exists due to incomplete fix for #VU51837 (CVE-2021-21409).


Remediation

Install update from vendor's website.

References