CVE-2023-33950: Release.portal.bom Liferay Portal Has Inefficient Regular Vulnerability

MODERATE
Advisory Identifier: GHSA-chrc-q6v3-jfv8
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CVSS 6.5
CWE-1333
Published
Advisory Summary

CVE-2023-33950 is a MODERATE (CVSS 6.5) liferay portal has inefficient regular vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Release.portal.bom libraries in the Maven ecosystem. The issue involves liferay portal has inefficient regular expression. Remediation is available by upgrading affected packages to version 7.4.3.77.

CVE-2023-33950 at a Glance

CVE Identifier CVE-2023-33950
GHSA Identifier GHSA-chrc-q6v3-jfv8
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Release.portal.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-2023-33950

To remediate this vulnerability, upgrade all affected Release.portal.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.portal.bom fixed: 7.4.3.77 
<dependency>
    <groupId>com.liferay.portal</groupId>
    <artifactId>release.portal.bom</artifactId>
    <version>7.4.3.77</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-2023-33950, 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.portal.bom in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.4.3.77), 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-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. In Release.portal.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

Pattern Redirects in Liferay Portal 7.4.3.48 through 7.4.3.76, and Liferay DXP 7.4 update 48 through 76 allows regular expressions that are vulnerable to ReDoS attacks to be used as patterns, which allows remote attackers to consume an excessive amount of server resources via crafted request URLs.

CVE-2023-33950 Affected Release.portal.bom Versions

1 component(s)
Fixed Versions:
7.4.3.77
Product / Package Ecosystem Affected Versions Fixed Version
com.liferay.portal:release.portal.bom
maven/com.liferay.portal/release.portal.bom
Maven
≥ 7.4.3.48
< 7.4.3.77
7.4.3.77

References

NVD — CVE-2023-33950 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-33950
Release.portal.bom Source Repository REPOSITORY
https://github.com/liferay/liferay-portal
Release.portal.bom Security Information SECURITY
https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/cve-2023-33950

Frequently Asked Questions

What is CVE-2023-33950?
CVE-2023-33950 is a security vulnerability in Release.portal.bom involving Liferay Portal has Inefficient Regular Expression under CWE-1333: Inefficient Regular Expression Complexity.
Which Release.portal.bom versions are affected?
Affected versions include releases prior to 7.4.3.77 across affected packages: com.liferay.portal:release.portal.bom.
What version fixes CVE-2023-33950?
Upgrading to 7.4.3.77 (or the latest patched release for your respective branch) resolves the vulnerability.
Is release.portal.bom affected?
Yes, com.liferay.portal:release.portal.bom is affected in releases prior to 7.4.3.77. Upgrade your dependency to 7.4.3.77 or later.
What is the CVSS score of CVE-2023-33950?
CVE-2023-33950 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-2023-33950?
CVE-2023-33950 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).
How can I check Maven dependencies for CVE-2023-33950?
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-chrc-q6v3-jfv8",
  "modified" : "2023-05-24T21:56:12Z",
  "published" : "2023-05-24T18:30:26Z",
  "aliases" : [ "CVE-2023-33950" ],
  "summary" : "Liferay Portal has Inefficient Regular Expression",
  "details" : "Pattern Redirects in Liferay Portal 7.4.3.48 through 7.4.3.76, and Liferay DXP 7.4 update 48 through 76 allows regular expressions that are vulnerable to ReDoS attacks to be used as patterns, which allows remote attackers to consume an excessive amount of server resources via crafted request URLs.",
  "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.portal.bom"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.4.3.48"
      }, {
        "fixed" : "7.4.3.77"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-33950"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/liferay/liferay-portal"
  }, {
    "type" : "WEB",
    "url" : "https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/cve-2023-33950"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-24T21:56:12Z",
    "nvd_published_at" : "2023-05-24T17:15:10Z"
  }
}