Vulnerabilities in pkg:maven/io.projectreactor.netty/reactor-netty-core

PACKAGE
Advisory Identifier: GHSA-q24v-hpg3-v3jp
Share
Advisory Summary

CVE-2023-34054 is a HIGH (CVSS 7.5) denial of service vulnerability (General Security Weakness) affecting Reactor netty core libraries in the Maven ecosystem. The issue involves reactor netty http server denial of service vulnerability. Remediation is available by upgrading affected packages to version 1.1.13, 1.0.39.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/io.projectreactor.netty/reactor-netty-core

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/io.projectreactor.netty/reactor-netty-core. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-q24v-hpg3-v3jp CVE-2023-34054 HIGH Reactor Netty HTTP Server denial of service vulnerability

CVE-2023-34054 at a Glance

CVE Identifier CVE-2023-34054
GHSA Identifier GHSA-q24v-hpg3-v3jp
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Reactor netty core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2023-34054

To remediate this vulnerability, upgrade all affected Reactor netty core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

io.projectreactor.netty:reactor-netty-core fixed: 1.1.13 
<dependency>
    <groupId>io.projectreactor.netty</groupId>
    <artifactId>reactor-netty-core</artifactId>
    <version>1.1.13</version>
</dependency>
io.projectreactor.netty:reactor-netty-core fixed: 1.0.39 
<dependency>
    <groupId>io.projectreactor.netty</groupId>
    <artifactId>reactor-netty-core</artifactId>
    <version>1.0.39</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=io.projectreactor.netty

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-34054, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.projectreactor.netty

Analyze the terminal output to locate any version of Reactor netty core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.13), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.projectreactor.netty command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Reactor netty core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition. Specifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.

CVE-2023-34054 Affected Reactor netty core Versions

2 component(s)
Fixed Versions:
1.1.131.0.39
Product / Package Ecosystem Affected Versions Fixed Version
io.projectreactor.netty:reactor-netty-core
maven/io.projectreactor.netty/reactor-netty-core
Maven
≥ 1.1.0
< 1.1.13
1.1.13
io.projectreactor.netty:reactor-netty-core
maven/io.projectreactor.netty/reactor-netty-core
Maven
≥ 1.0.0
< 1.0.39
1.0.39

References

NVD — CVE-2023-34054 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-34054
Security Fix Commit FIX COMMIT
https://github.com/reactor/reactor-netty/commit/37dc8a2ef6514cd7834e75e7f3faf0b9ea044c88
Security Fix Commit FIX COMMIT
https://github.com/reactor/reactor-netty/commit/4ddbb1b9b985bb72290110ebae468a54e7f19420
Security Fix Commit FIX COMMIT
https://github.com/reactor/reactor-netty/commit/ae82154e99e6f51f4816effd135f0c3a966d6ea3
Reactor netty core Source Repository REPOSITORY
https://github.com/reactor/reactor-netty
Reactor netty core Release RELEASE
https://github.com/reactor/reactor-netty/releases/tag/v1.0.39
Reactor netty core Release RELEASE
https://github.com/reactor/reactor-netty/releases/tag/v1.1.13
Reactor netty core Security Information SECURITY
https://spring.io/security/cve-2023-34054

Frequently Asked Questions

What is CVE-2023-34054?
CVE-2023-34054 is a security vulnerability in Reactor netty core involving Reactor Netty HTTP Server denial of service vulnerability under General Security Weakness.
Which Reactor netty core versions are affected?
Affected versions include releases prior to 1.1.13, 1.0.39 across affected packages: io.projectreactor.netty:reactor-netty-core.
What version fixes CVE-2023-34054?
Upgrading to 1.1.13, 1.0.39 (or the latest patched release for your respective branch) resolves the vulnerability.
Is reactor-netty-core affected?
Yes, io.projectreactor.netty:reactor-netty-core is affected in releases prior to 1.1.13, 1.0.39. Upgrade your dependency to 1.1.13, 1.0.39 or later.
What is the CVSS score of CVE-2023-34054?
CVE-2023-34054 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2023-34054?
CVE-2023-34054 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2023-34054?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.projectreactor.netty'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q24v-hpg3-v3jp",
  "modified" : "2024-06-28T12:49:34Z",
  "published" : "2023-11-28T09:30:27Z",
  "aliases" : [ "CVE-2023-34054" ],
  "summary" : "Reactor Netty HTTP Server denial of service vulnerability",
  "details" : "In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.projectreactor.netty:reactor-netty-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.1.0"
      }, {
        "fixed" : "1.1.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.projectreactor.netty:reactor-netty-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.0.0"
      }, {
        "fixed" : "1.0.39"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-34054"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/reactor/reactor-netty/commit/37dc8a2ef6514cd7834e75e7f3faf0b9ea044c88"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/reactor/reactor-netty/commit/4ddbb1b9b985bb72290110ebae468a54e7f19420"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/reactor/reactor-netty/commit/ae82154e99e6f51f4816effd135f0c3a966d6ea3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/reactor/reactor-netty"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/reactor/reactor-netty/releases/tag/v1.0.39"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/reactor/reactor-netty/releases/tag/v1.1.13"
  }, {
    "type" : "WEB",
    "url" : "https://spring.io/security/cve-2023-34054"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-28T20:53:41Z",
    "nvd_published_at" : "2023-11-28T09:15:07Z"
  }
}