CVE-2020-27148: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-x33g-fm74-m47v
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CWE-611
Published
Advisory Summary

CVE-2020-27148 is a HIGH security vulnerability vulnerability (CWE-611: Improper Restriction of XML External Entity Reference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product processes an xml document that can contain xml entities with uris that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.. Remediation is available in the latest vendor maintenance releases.

CVE-2020-27148 at a Glance

CVE Identifier CVE-2020-27148
GHSA Identifier GHSA-x33g-fm74-m47v
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-611: Improper Restriction of XML External Entity Reference
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2020-27148

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

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

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-27148, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

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

Note: The mvn dependency:tree 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-611: Improper Restriction of XML External Entity Reference, where the product processes an xml document that can contain xml entities with uris that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. In Software, 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

The TIBCO EBX Add-on for Oracle Hyperion EPM, TIBCO EBX Data Exchange Add-on, and TIBCO EBX Insight Add-on components of TIBCO Software Inc.'s TIBCO EBX Add-ons contain a vulnerability that theoretically allows a low privileged attacker with network access to execute an XML External Entity (XXE) attack. Affected releases are TIBCO Software Inc.'s TIBCO EBX Add-ons: versions 4.4.2 and below.

References

NVD — CVE-2020-27148 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27148
Software Security Information SECURITY
https://www.tibco.com/support/advisories/2021/01/tibco-security-advisory-january-12-2021-tibco-ebx
Software Security Information SECURITY
https://www.tibco.com/support/advisories/2021/01/tibco-security-advisory-january-12-2021-tibco-ebx-add-ons
www.tibco.com/services/support/ad... WEB
http://www.tibco.com/services/support/advisories

Frequently Asked Questions

What is CVE-2020-27148?
CVE-2020-27148 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-611: Improper Restriction of XML External Entity Reference.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2020-27148?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2020-27148?
CVE-2020-27148 is classified under CWE-611: Improper Restriction of XML External Entity Reference (The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.).
How can I check Maven dependencies for CVE-2020-27148?
Run the dependency tree command: 'mvn dependency:tree'. 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-x33g-fm74-m47v",
  "modified" : "2022-05-24T17:38:34Z",
  "published" : "2022-05-24T17:38:34Z",
  "aliases" : [ "CVE-2020-27148" ],
  "details" : "The TIBCO EBX Add-on for Oracle Hyperion EPM, TIBCO EBX Data Exchange Add-on, and TIBCO EBX Insight Add-on components of TIBCO Software Inc.'s TIBCO EBX Add-ons contain a vulnerability that theoretically allows a low privileged attacker with network access to execute an XML External Entity (XXE) attack. Affected releases are TIBCO Software Inc.'s TIBCO EBX Add-ons: versions 4.4.2 and below.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-27148"
  }, {
    "type" : "WEB",
    "url" : "https://www.tibco.com/support/advisories/2021/01/tibco-security-advisory-january-12-2021-tibco-ebx"
  }, {
    "type" : "WEB",
    "url" : "https://www.tibco.com/support/advisories/2021/01/tibco-security-advisory-january-12-2021-tibco-ebx-add-ons"
  }, {
    "type" : "WEB",
    "url" : "http://www.tibco.com/services/support/advisories"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-611" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2021-01-12T18:15:00Z"
  }
}