CVE-2021-21295 (Medium) detected in multiple libraries

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CVE-2021-21295 - Medium Severity Vulnerability

Vulnerable Libraries - netty-all-4.1.17.Final.jar, netty-all-4.1.49.Final.jar, netty-all-4.0.52.Final.jar, netty-all-4.0.23.Final.jar

netty-all-4.1.17.Final.jar

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.

Library home page: http://netty.io/

Path to dependency file: /hive-agent/pom.xml

Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-all/4.1.17.Final/netty-all-4.1.17.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.1.17.Final/netty-all-4.1.17.Final.jar

Dependency Hierarchy:

• hive-service-3.1.2.jar (Root Library)
  • hive-llap-server-3.1.2.jar
    • ❌ netty-all-4.1.17.Final.jar (Vulnerable Library)

netty-all-4.1.49.Final.jar

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.

Library home page: https://netty.io/

Path to dependency file: /security-admin/pom.xml

Path to vulnerable library: /canner/.m2/repository/io/netty/netty-all/4.1.49.Final/netty-all-4.1.49.Final.jar

Dependency Hierarchy:

• ❌ netty-all-4.1.49.Final.jar (Vulnerable Library)

netty-all-4.0.52.Final.jar

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.

Library home page: http://netty.io/

Path to dependency file: /kms/pom.xml

Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar,/home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.52.Final/netty-all-4.0.52.Final.jar

Dependency Hierarchy:

• hadoop-hdfs-3.1.1.jar (Root Library)
  • ❌ netty-all-4.0.52.Final.jar (Vulnerable Library)

netty-all-4.0.23.Final.jar

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.

Library home page: http://netty.io/

Path to dependency file: /ranger-hbase-plugin-shim/pom.xml

Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-all/4.0.23.Final/netty-all-4.0.23.Final.jar

Dependency Hierarchy:

• hbase-server-2.0.2.jar (Root Library)
  • hadoop-hdfs-2.7.7.jar
    • ❌ netty-all-4.0.23.Final.jar (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by Http2MultiplexHandler as it is propagated up. This is fine as long as the request is not proxied through as HTTP/1.1. If the request comes in as an HTTP/2 stream, gets converted into the HTTP/1.1 domain objects (HttpRequest, HttpContent, etc.) via Http2StreamFrameToHttpObjectCodec and then sent up to the child channel's pipeline and proxied through a remote peer as HTTP/1.1 this may result in request smuggling. In a proxy case, users may assume the content-length is validated somehow, which is not the case. If the request is forwarded to a backend channel that is a HTTP/1.1 connection, the Content-Length now has meaning and needs to be checked. An attacker can smuggle requests inside the body as it gets downgraded from HTTP/2 to HTTP/1.1. For an example attack refer to the linked GitHub Advisory. Users are only affected if all of this is true: HTTP2MultiplexCodec or Http2FrameCodec is used, Http2StreamFrameToHttpObjectCodec is used to convert to HTTP/1.1 objects, and these HTTP/1.1 objects are forwarded to another remote peer. This has been patched in 4.1.60.Final As a workaround, the user can do the validation by themselves by implementing a custom ChannelInboundHandler that is put in the ChannelPipeline behind Http2StreamFrameToHttpObjectCodec.

Publish Date: 2021-03-09

URL: CVE-2021-21295

CVSS 3 Score Details (5.9)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-wm47-8v5p-wjpj

Release Date: 2021-03-09

Fix Resolution (io.netty:netty-all): 4.1.60.Final

Direct dependency fix Resolution (org.apache.hadoop:hadoop-hdfs): 3.1.2

Fix Resolution (io.netty:netty-all): 4.1.60.Final

Direct dependency fix Resolution (org.apache.hbase:hbase-server): 2.0.3

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⛑️ Automatic Remediation is available for this issue