swagger-api / swagger-api/swagger-codegen
CVE-2021-37136 (High) detected in netty-codec-4.1.8.Final.jar, netty-codec-4.0.42.Final.jar
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Description
CVE-2021-37136 - 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 Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression). All users of Bzip2Decoder are affected. The malicious input can trigger an OOME and so a DoS attack
Publish Date: 2021-10-19
URL: CVE-2021-37136
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/netty/netty/security/advisories/GHSA-grg4-wf29-r9vv
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
Inspect samples/client/petstore/java/vertx/build.gradle and samples/client/petstore/java/retrofit2-play25/build.gradle, then review how each resolves the vulnerable Netty dependency. Update the dependency to a fixed resolution and verify that both sample builds no longer resolve the affected versions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- build-system, security
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 45/100