CVE-2019-3888: Undertow core Credential Exposure Through Log Files Vulnerability

CRITICAL
Advisory Identifier: GHSA-jwgx-9mmh-684w
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CVSS 9.8
CWE-532
Published
Advisory Summary

CVE-2019-3888 is a CRITICAL (CVSS 9.8) credential exposure through log files vulnerability (CWE-532: Insertion of Sensitive Information into Log File) affecting Undertow core libraries in the Maven ecosystem. The issue involves credential exposure through log files in undertow. Remediation is available by upgrading affected packages to version 2.0.21.

CVE-2019-3888 at a Glance

CVE Identifier CVE-2019-3888
GHSA Identifier GHSA-jwgx-9mmh-684w
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-532: Insertion of Sensitive Information into Log File
Affected Product Undertow core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2019-3888

To remediate this vulnerability, upgrade all affected Undertow 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.undertow:undertow-core fixed: 2.0.21 
<dependency>
    <groupId>io.undertow</groupId>
    <artifactId>undertow-core</artifactId>
    <version>2.0.21</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.undertow

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2019-3888, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.undertow

Analyze the terminal output to locate any version of Undertow core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.21), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.undertow 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-532: Insertion of Sensitive Information into Log File, where the product writes sensitive information to a log file. In Undertow 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

A vulnerability was found in Undertow web server before 2.0.21. An information exposure of plain text credentials through log files because Connectors.executeRootHandler:402 logs the HttpServerExchange object at ERROR level using UndertowLogger.REQUEST_LOGGER.undertowRequestFailed(t, exchange)

CVE-2019-3888 Affected Undertow core Versions

1 component(s)
Fixed Versions:
2.0.21
Product / Package Ecosystem Affected Versions Fixed Version
io.undertow:undertow-core
maven/io.undertow/undertow-core
Maven
< 2.0.21
2.0.21

References

NVD — CVE-2019-3888 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-3888
access.redhat.com/errata/rhsa-2019:24... WEB
https://access.redhat.com/errata/RHSA-2019:2439
access.redhat.com/errata/rhsa-2019:29... WEB
https://access.redhat.com/errata/RHSA-2019:2998
access.redhat.com/errata/rhsa-2020:07... WEB
https://access.redhat.com/errata/RHSA-2020:0727
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3888
Undertow core Security Information SECURITY
https://security.netapp.com/advisory/ntap-20220210-0019
Undertow core Security Information SECURITY
http://www.securityfocus.com/bid/108739

Frequently Asked Questions

What is CVE-2019-3888?
CVE-2019-3888 is a security vulnerability in Undertow core involving Credential exposure through log files in Undertow under CWE-532: Insertion of Sensitive Information into Log File.
Which Undertow core versions are affected?
Affected versions include releases prior to 2.0.21 across affected packages: io.undertow:undertow-core.
What version fixes CVE-2019-3888?
Upgrading to 2.0.21 (or the latest patched release for your respective branch) resolves the vulnerability.
Is undertow-core affected?
Yes, io.undertow:undertow-core is affected in releases prior to 2.0.21. Upgrade your dependency to 2.0.21 or later.
What is the CVSS score of CVE-2019-3888?
CVE-2019-3888 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-3888?
CVE-2019-3888 is classified under CWE-532: Insertion of Sensitive Information into Log File (The product writes sensitive information to a log file.).
How can I check Maven dependencies for CVE-2019-3888?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.undertow'. 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-jwgx-9mmh-684w",
  "modified" : "2022-02-11T21:13:16Z",
  "published" : "2019-06-13T20:02:56Z",
  "aliases" : [ "CVE-2019-3888" ],
  "summary" : "Credential exposure through log files in Undertow",
  "details" : "A vulnerability was found in Undertow web server before 2.0.21. An information exposure of plain text credentials through log files because Connectors.executeRootHandler:402 logs the HttpServerExchange object at ERROR level using UndertowLogger.REQUEST_LOGGER.undertowRequestFailed(t, exchange)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.undertow:undertow-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.21"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-3888"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2019:2439"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2019:2998"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2020:0727"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3888"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20220210-0019"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/108739"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-532" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-06-13T20:02:23Z",
    "nvd_published_at" : "2019-06-12T14:29:00Z"
  }
}