CVE-2024-23901: Gitlab branch source Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-fw9h-cxx9-gfq3
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CVSS 5.4
CWE-200
Published
Advisory Summary

CVE-2024-23901 is a MODERATE (CVSS 5.4) remote code execution vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Gitlab branch source libraries in the Maven ecosystem. The issue involves shared projects are unconditionally discovered by jenkins gitlab branch source plugin. Remediation is available by upgrading affected packages to version 688.v5fa.

CVE-2024-23901 at a Glance

CVE Identifier CVE-2024-23901
GHSA Identifier GHSA-fw9h-cxx9-gfq3
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Gitlab branch source
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.4

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:R/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2024-23901

To remediate this vulnerability, upgrade all affected Gitlab branch source 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.jenkins.plugins:gitlab-branch-source fixed: 688.v5fa 
<dependency>
    <groupId>io.jenkins.plugins</groupId>
    <artifactId>gitlab-branch-source</artifactId>
    <version>688.v5fa</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.jenkins.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2024-23901, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.jenkins.plugins

Analyze the terminal output to locate any version of Gitlab branch source in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 688.v5fa), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.jenkins.plugins 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-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Gitlab branch source, 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

GitLab allows sharing a project with another group. Jenkins GitLab Branch Source Plugin 684.vea_fa_7c1e2fe3 and earlier unconditionally discovers projects that are shared with the configured owner group. This allows attackers to configure and share a project, resulting in a crafted Pipeline being built by Jenkins after the next scan of the group’s projects. In GitLab Branch Source Plugin 688.v5fa_356ee8520, the default strategy for discovering projects does not discover projects shared with the configured owner group. To discover projects shared with the configured owner group, use the new trait "Discover shared projects".

CVE-2024-23901 Affected Gitlab branch source Versions

1 component(s)
Fixed Versions:
688.v5fa
Product / Package Ecosystem Affected Versions Fixed Version
io.jenkins.plugins:gitlab-branch-source
maven/io.jenkins.plugins/gitlab-branch-source
Maven
< 688.v5fa
688.v5fa

References

NVD — CVE-2024-23901 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-23901
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/gitlab-branch-source-plugin/commit/969ccece8e2185ecdb7c342b27173af1ab17045c
Gitlab branch source Source Repository REPOSITORY
https://github.com/jenkinsci/gitlab-branch-source-plugin
Gitlab branch source Security Information SECURITY
https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3040
Gitlab branch source Security Information SECURITY
http://www.openwall.com/lists/oss-security/2024/01/24/6

Frequently Asked Questions

What is CVE-2024-23901?
CVE-2024-23901 is a security vulnerability in Gitlab branch source involving Shared projects are unconditionally discovered by Jenkins GitLab Branch Source Plugin under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Gitlab branch source versions are affected?
Affected versions include releases prior to 688.v5fa across affected packages: io.jenkins.plugins:gitlab-branch-source.
What version fixes CVE-2024-23901?
Upgrading to 688.v5fa (or the latest patched release for your respective branch) resolves the vulnerability.
Is gitlab-branch-source affected?
Yes, io.jenkins.plugins:gitlab-branch-source is affected in releases prior to 688.v5fa. Upgrade your dependency to 688.v5fa or later.
What is the CVSS score of CVE-2024-23901?
CVE-2024-23901 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2024-23901?
CVE-2024-23901 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Maven dependencies for CVE-2024-23901?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.jenkins.plugins'. 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-fw9h-cxx9-gfq3",
  "modified" : "2024-01-31T20:24:13Z",
  "published" : "2024-01-24T18:31:02Z",
  "aliases" : [ "CVE-2024-23901" ],
  "summary" : "Shared projects are unconditionally discovered by Jenkins GitLab Branch Source Plugin",
  "details" : "GitLab allows sharing a project with another group.\n\nJenkins GitLab Branch Source Plugin 684.vea_fa_7c1e2fe3 and earlier unconditionally discovers projects that are shared with the configured owner group.\n\nThis allows attackers to configure and share a project, resulting in a crafted Pipeline being built by Jenkins after the next scan of the group’s projects.\n\nIn GitLab Branch Source Plugin 688.v5fa_356ee8520, the default strategy for discovering projects does not discover projects shared with the configured owner group. To discover projects shared with the configured owner group, use the new trait \"Discover shared projects\".",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.jenkins.plugins:gitlab-branch-source"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "688.v5fa"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-23901"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/gitlab-branch-source-plugin/commit/969ccece8e2185ecdb7c342b27173af1ab17045c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/gitlab-branch-source-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3040"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2024/01/24/6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-24T21:49:51Z",
    "nvd_published_at" : "2024-01-24T18:15:09Z"
  }
}