CVE-2019-10797: Org.wso2.transport.http.netty HTTP Response Splitting Vulnerability

MODERATE
Advisory Identifier: GHSA-rvpc-w57p-q95f
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CVSS 6.5
CWE-113
Published
Advisory Summary

CVE-2019-10797 is a MODERATE (CVSS 6.5) http response splitting vulnerability (CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')) affecting Org.wso2.transport.http.netty libraries in the Maven ecosystem. The issue involves http response splitting in wso2 transport-http. Remediation is available by upgrading affected packages to version 6.3.1.

CVE-2019-10797 at a Glance

CVE Identifier CVE-2019-10797
GHSA Identifier GHSA-rvpc-w57p-q95f
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
Affected Product Org.wso2.transport.http.netty
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:R/S:U/C:N/I:H/A:N).

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

How to Fix CVE-2019-10797

To remediate this vulnerability, upgrade all affected Org.wso2.transport.http.netty dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.wso2.transport.http:org.wso2.transport.http.netty fixed: 6.3.1 
<dependency>
    <groupId>org.wso2.transport.http</groupId>
    <artifactId>org.wso2.transport.http.netty</artifactId>
    <version>6.3.1</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=org.wso2.transport.http

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2019-10797, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.wso2.transport.http

Analyze the terminal output to locate any version of Org.wso2.transport.http.netty in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.3.1), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.wso2.transport.http 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 CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting'), where the product receives data from an http agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes cr and lf characters before the data is included in outgoing http headers. In Org.wso2.transport.http.netty, 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

Netty in WSO2 transport-http before v6.3.1 is vulnerable to HTTP Response Splitting due to HTTP Header validation being disabled.

CVE-2019-10797 Affected Org.wso2.transport.http.netty Versions

1 component(s)
Fixed Versions:
6.3.1
Product / Package Ecosystem Affected Versions Fixed Version
org.wso2.transport.http:org.wso2.transport.http.netty
maven/org.wso2.transport.http/org.wso2.transport.http.netty
Maven
< 6.3.1
6.3.1

References

NVD — CVE-2019-10797 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10797
snyk.io/vuln/snyk-java-orgw... WEB
https://snyk.io/vuln/SNYK-JAVA-ORGWSO2TRANSPORTHTTP-548944

Frequently Asked Questions

What is CVE-2019-10797?
CVE-2019-10797 is a security vulnerability in Org.wso2.transport.http.netty involving HTTP Response Splitting in WSO2 transport-http under CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting').
Which Org.wso2.transport.http.netty versions are affected?
Affected versions include releases prior to 6.3.1 across affected packages: org.wso2.transport.http:org.wso2.transport.http.netty.
What version fixes CVE-2019-10797?
Upgrading to 6.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is org.wso2.transport.http.netty affected?
Yes, org.wso2.transport.http:org.wso2.transport.http.netty is affected in releases prior to 6.3.1. Upgrade your dependency to 6.3.1 or later.
What is the CVSS score of CVE-2019-10797?
CVE-2019-10797 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2019-10797?
CVE-2019-10797 is classified under CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') (The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers.).
How can I check Maven dependencies for CVE-2019-10797?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.wso2.transport.http'. 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-rvpc-w57p-q95f",
  "modified" : "2021-04-07T21:38:25Z",
  "published" : "2022-02-09T22:35:29Z",
  "aliases" : [ "CVE-2019-10797" ],
  "summary" : "HTTP Response Splitting in WSO2 transport-http",
  "details" : "Netty in WSO2 transport-http before v6.3.1 is vulnerable to HTTP Response Splitting due to HTTP Header validation being disabled.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.wso2.transport.http:org.wso2.transport.http.netty"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-10797"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JAVA-ORGWSO2TRANSPORTHTTP-548944"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-113" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-07T21:38:25Z",
    "nvd_published_at" : "2020-02-19T19:15:00Z"
  }
}