CVE-2020-15839: Release.dxp.bom Unrestricted Upload Of File With Vulnerability

MODERATE
Advisory Identifier: GHSA-c7f6-4vx5-4263
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CVSS 6.5
CWE-434
Published
Advisory Summary

CVE-2020-15839 is a MODERATE (CVSS 6.5) unrestricted upload of file with vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Release.dxp.bom libraries in the Maven ecosystem. The issue involves unrestricted upload of file with dangerous type in liferay portal and liferay dxp. Remediation is available by upgrading affected packages to version 7.1.10.fp18, 7.2.10.fp6.

CVE-2020-15839 at a Glance

CVE Identifier CVE-2020-15839
GHSA Identifier GHSA-c7f6-4vx5-4263
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product Release.dxp.bom
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:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2020-15839

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

com.liferay.portal:release.dxp.bom fixed: 7.1.10.fp18 
<dependency>
    <groupId>com.liferay.portal</groupId>
    <artifactId>release.dxp.bom</artifactId>
    <version>7.1.10.fp18</version>
</dependency>
com.liferay.portal:release.dxp.bom fixed: 7.2.10.fp6 
<dependency>
    <groupId>com.liferay.portal</groupId>
    <artifactId>release.dxp.bom</artifactId>
    <version>7.2.10.fp6</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=com.liferay.portal

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-15839, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.liferay.portal

Analyze the terminal output to locate any version of Release.dxp.bom in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.1.10.fp18), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.liferay.portal 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-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. In Release.dxp.bom, 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

Liferay Portal before 7.3.3, and Liferay DXP 7.1 before fix pack 18 and 7.2 before fix pack 6, does not restrict the size of a multipart/form-data POST action, which allows remote authenticated users to conduct denial-of-service attacks by uploading large files.

CVE-2020-15839 Affected Release.dxp.bom Versions

2 component(s)
Fixed Versions:
7.1.10.fp187.2.10.fp6
Product / Package Ecosystem Affected Versions Fixed Version
com.liferay.portal:release.dxp.bom
maven/com.liferay.portal/release.dxp.bom
Maven
< 7.1.10.fp18
7.1.10.fp18
com.liferay.portal:release.dxp.bom
maven/com.liferay.portal/release.dxp.bom
Maven
≥ 7.2.1
< 7.2.10.fp6
7.2.10.fp6

References

NVD — CVE-2020-15839 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15839
issues.liferay.com/browse/lpe-17029 WEB
https://issues.liferay.com/browse/LPE-17029
issues.liferay.com/browse/lpe-17055 WEB
https://issues.liferay.com/browse/LPE-17055
Release.dxp.bom Security Information SECURITY
https://portal.liferay.dev/learn/security/known-vulnerabilities
Release.dxp.bom Security Information SECURITY
https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/119784928

Frequently Asked Questions

What is CVE-2020-15839?
CVE-2020-15839 is a security vulnerability in Release.dxp.bom involving Unrestricted Upload of File with Dangerous Type in Liferay Portal and Liferay DXP under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Release.dxp.bom versions are affected?
Affected versions include releases prior to 7.1.10.fp18, 7.2.10.fp6 across affected packages: com.liferay.portal:release.dxp.bom.
What version fixes CVE-2020-15839?
Upgrading to 7.1.10.fp18, 7.2.10.fp6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is release.dxp.bom affected?
Yes, com.liferay.portal:release.dxp.bom is affected in releases prior to 7.1.10.fp18, 7.2.10.fp6. Upgrade your dependency to 7.1.10.fp18, 7.2.10.fp6 or later.
What is the CVSS score of CVE-2020-15839?
CVE-2020-15839 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2020-15839?
CVE-2020-15839 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check Maven dependencies for CVE-2020-15839?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.liferay.portal'. 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-c7f6-4vx5-4263",
  "modified" : "2021-05-03T17:25:30Z",
  "published" : "2022-02-10T20:46:21Z",
  "aliases" : [ "CVE-2020-15839" ],
  "summary" : "Unrestricted Upload of File with Dangerous Type in Liferay Portal and Liferay DXP",
  "details" : "Liferay Portal before 7.3.3, and Liferay DXP 7.1 before fix pack 18 and 7.2 before fix pack 6, does not restrict the size of a multipart/form-data POST action, which allows remote authenticated users to conduct denial-of-service attacks by uploading large files.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.liferay.portal:release.dxp.bom"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "7.1.10.fp18"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 7.1.10.fp17"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.liferay.portal:release.dxp.bom"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.2.1"
      }, {
        "fixed" : "7.2.10.fp6"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 7.2.10.fp5"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-15839"
  }, {
    "type" : "WEB",
    "url" : "https://issues.liferay.com/browse/LPE-17029"
  }, {
    "type" : "WEB",
    "url" : "https://issues.liferay.com/browse/LPE-17055"
  }, {
    "type" : "WEB",
    "url" : "https://portal.liferay.dev/learn/security/known-vulnerabilities"
  }, {
    "type" : "WEB",
    "url" : "https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/119784928"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-03T17:25:30Z",
    "nvd_published_at" : "2020-09-22T18:15:00Z"
  }
}