swagger-api / swagger-api/swagger-codegen
CVE-2021-37137 (High) detected in netty-codec-4.1.8.Final.jar, netty-codec-4.0.42.Final.jar
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Description
CVE-2021-37137 - High Severity Vulnerability
Vulnerable Libraries - netty-codec-4.1.8.Final.jar, netty-codec-4.0.42.Final.jar
netty-codec-4.1.8.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: /samples/client/petstore/java/vertx/build.gradle
Path to vulnerable library: /home/wss-scanner/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec/4.1.8.Final/1bd0a2d032e5c7fc3f42c1b483d0f4c57eb516a3/netty-codec-4.1.8.Final.jar
Dependency Hierarchy:
- vertx-web-client-3.4.2.jar (Root Library)
- vertx-core-3.4.2.jar
- netty-codec-http-4.1.8.Final.jar
- ❌ netty-codec-4.1.8.Final.jar (Vulnerable Library)
- netty-codec-http-4.1.8.Final.jar
- vertx-core-3.4.2.jar
netty-codec-4.0.42.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: /samples/client/petstore/java/retrofit2-play25/build.gradle
Path to vulnerable library: /home/wss-scanner/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec/4.0.42.Final/2bc87beea47a038c01e746cdc25650e88bfad8e/netty-codec-4.0.42.Final.jar
Dependency Hierarchy:
- play-java-ws_2.11-2.5.14.jar (Root Library)
- async-http-client-2.0.24.jar
- netty-codec-http-4.0.42.Final.jar
- ❌ netty-codec-4.0.42.Final.jar (Vulnerable Library)
- netty-codec-http-4.0.42.Final.jar
- async-http-client-2.0.24.jar
Found in HEAD commit: 4b7a8d7d7384aa6a27d6309c35ade0916edae7ed
Found in base branches: 3.0.0, master
Vulnerability Details
The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well. This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.
Publish Date: 2021-10-19
URL: CVE-2021-37137
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
Suggested Fix
Type: Upgrade version
Origin: https://github.com/advisories/GHSA-9vjp-v76f-g363
Release Date: 2021-10-19
Fix Resolution (io.netty:netty-codec): 4.1.68.Final
Direct dependency fix Resolution (io.vertx:vertx-web-client): 3.5.0
- Check this box to open an automated fix PR
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with /samples/client/petstore/java/vertx/build.gradle and /samples/client/petstore/java/retrofit2-play25/build.gradle, then inspect the listed dependency hierarchies for the vulnerable Netty versions. Apply the stated fixed dependency resolution and verify that neither vulnerable netty-codec version remains in the resolved dependencies.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- security
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 55/100