CVE-2021-43797

Aliases:GHSA-wx5j-54mm-rqqq
Advisory lineage Upstream: 0 Downstream: 17
Modified
Published: 09 Dec 2021, 00:00
Last modified:04 Aug 2024, 04:03

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.38% LOW
0% probability -0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Dec 2021, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 04:03
Last Modified
Vulnerability information updated

Description

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 0.38%• Percentile: 60%

Techniques & Countermeasures

  • CWE-444•Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

    The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Affected Systems

  • debian•debian_linux

    10.0 | 11.0

  • io.netty•netty

    all

  • io.netty•netty-codec-http

    ≥ 4.0.0, < 4.1.71.Final

  • org.jboss.netty•netty

    all

  • netapp•oncommand_workflow_automation

    na

  • netapp•snapcenter

    na

  • netty•netty

    < 4.1.71 | ≤ 4.1.7.0.Final

  • oracle•banking_deposits_and_lines_of_credit_servicing

    2.7

  • oracle•banking_party_management

    2.7.0

  • oracle•banking_platform

    2.6.2

  • oracle•coherence

    12.2.1.4.0 | 14.1.1.0.0

  • oracle•communications_cloud_native_core_binding_support_function

    1.11.0

  • oracle•communications_cloud_native_core_network_slice_selection_function

    1.8.0

  • oracle•communications_cloud_native_core_policy

    1.15.0

  • oracle•communications_cloud_native_core_security_edge_protection_proxy

    1.7.0

  • oracle•communications_cloud_native_core_unified_data_repository

    1.15.0

  • oracle•communications_design_studio

    7.4.2

  • oracle•communications_instant_messaging_server

    8.1

  • oracle•helidon

    1.4.10 | 2.4.0

  • oracle•peoplesoft_enterprise_peopletools

    8.58 | 8.59

  • quarkus•quarkus

    < 2.5.3

References (11)