CVE-2023-25613: Ldap backend Apache Kerby LdapIdentityBackend LDAP Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-337f-xr2x-6fcf
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CVSS 9.8
CWE-74
Published
Advisory Summary

CVE-2023-25613 is a CRITICAL (CVSS 9.8) apache kerby ldapidentitybackend ldap injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Ldap backend libraries in the Maven ecosystem. The issue involves apache kerby ldapidentitybackend ldap injection vulnerability. Remediation is available by upgrading affected packages to version 2.0.3.

CVE-2023-25613 at a Glance

CVE Identifier CVE-2023-25613
GHSA Identifier GHSA-337f-xr2x-6fcf
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Affected Product Ldap backend
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-2023-25613

To remediate this vulnerability, upgrade all affected Ldap backend 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.apache.kerby:ldap-backend fixed: 2.0.3 
<dependency>
    <groupId>org.apache.kerby</groupId>
    <artifactId>ldap-backend</artifactId>
    <version>2.0.3</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.apache.kerby

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-25613, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.kerby

Analyze the terminal output to locate any version of Ldap backend in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.3), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.kerby 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-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. In Ldap backend, 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

An LDAP Injection vulnerability exists in the LdapIdentityBackend of Apache Kerby before 2.0.3.

CVE-2023-25613 Affected Ldap backend Versions

1 component(s)
Fixed Versions:
2.0.3
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.kerby:ldap-backend
maven/org.apache.kerby/ldap-backend
Maven
< 2.0.3
2.0.3

References

NVD — CVE-2023-25613 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-25613
Ldap backend Source Repository REPOSITORY
https://github.com/apache/directory-kerby
lists.apache.org/thread/ynz3hhbbq6d9... WEB
https://lists.apache.org/thread/ynz3hhbbq6d980fzpncwbh5jd8mkyt5y

Frequently Asked Questions

What is CVE-2023-25613?
CVE-2023-25613 is a security vulnerability in Ldap backend involving Apache Kerby LdapIdentityBackend LDAP Injection vulnerability under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection').
Which Ldap backend versions are affected?
Affected versions include releases prior to 2.0.3 across affected packages: org.apache.kerby:ldap-backend.
What version fixes CVE-2023-25613?
Upgrading to 2.0.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ldap-backend affected?
Yes, org.apache.kerby:ldap-backend is affected in releases prior to 2.0.3. Upgrade your dependency to 2.0.3 or later.
What is the CVSS score of CVE-2023-25613?
CVE-2023-25613 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-2023-25613?
CVE-2023-25613 is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.).
How can I check Maven dependencies for CVE-2023-25613?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.kerby'. 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-337f-xr2x-6fcf",
  "modified" : "2023-03-02T20:00:00Z",
  "published" : "2023-02-20T18:30:17Z",
  "aliases" : [ "CVE-2023-25613" ],
  "summary" : "Apache Kerby LdapIdentityBackend LDAP Injection vulnerability",
  "details" : "An LDAP Injection vulnerability exists in the LdapIdentityBackend of Apache Kerby before 2.0.3.",
  "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" : "org.apache.kerby:ldap-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-25613"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/directory-kerby"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/ynz3hhbbq6d980fzpncwbh5jd8mkyt5y"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-02-22T00:12:20Z",
    "nvd_published_at" : "2023-02-20T16:15:00Z"
  }
}