CVE-2022-43411: Gitlab plugin Non-constant Time Webhook Token Comparison Vulnerability

LOW
Advisory Identifier: GHSA-f9f9-4r63-4qcc
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CVSS 3.7
CWE-203 CWE-208
Published
Advisory Summary

CVE-2022-43411 is a LOW (CVSS 3.7) non-constant time webhook token comparison vulnerability (CWE-203: Observable Discrepancy) affecting Gitlab plugin libraries in the Maven ecosystem. The issue involves non-constant time webhook token comparison in jenkins gitlab plugin. Remediation is available by upgrading affected packages to version 1.5.36.

CVE-2022-43411 at a Glance

CVE Identifier CVE-2022-43411
GHSA Identifier GHSA-f9f9-4r63-4qcc
Severity LOW
CVSS v3.1 Base Score 3.7
CWE Classification CWE-203: Observable Discrepancy
Affected Product Gitlab plugin
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).

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

How to Fix CVE-2022-43411

To remediate this vulnerability, upgrade all affected Gitlab plugin 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.jenkins-ci.plugins:gitlab-plugin fixed: 1.5.36 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>gitlab-plugin</artifactId>
    <version>1.5.36</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.jenkins-ci.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-43411, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jenkins-ci.plugins

Analyze the terminal output to locate any version of Gitlab plugin in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.36), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.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-203: Observable Discrepancy, where the product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor. In Gitlab plugin, 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 Plugin 1.5.35 and earlier does not use a constant-time comparison when checking whether the provided and expected webhook token are equal. This could potentially allow attackers to use statistical methods to obtain a valid webhook token. GitLab Plugin 1.5.36 uses a constant-time comparison when validating the webhook token.

CVE-2022-43411 Affected Gitlab plugin Versions

1 component(s)
Fixed Versions:
1.5.36
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:gitlab-plugin
maven/org.jenkins-ci.plugins/gitlab-plugin
Maven
< 1.5.36
1.5.36

References

NVD — CVE-2022-43411 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-43411
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/gitlab-plugin/commit/882f84c6a42b42b74ff7c9803d814f61b8fde0ed
Gitlab plugin Source Repository REPOSITORY
https://github.com/jenkinsci/gitlab-plugin
Gitlab plugin Security Information SECURITY
https://www.jenkins.io/security/advisory/2022-10-19/#SECURITY-2877
Gitlab plugin Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/10/19/3

Frequently Asked Questions

What is CVE-2022-43411?
CVE-2022-43411 is a security vulnerability in Gitlab plugin involving Non-constant time webhook token comparison in Jenkins GitLab Plugin under CWE-203: Observable Discrepancy.
Which Gitlab plugin versions are affected?
Affected versions include releases prior to 1.5.36 across affected packages: org.jenkins-ci.plugins:gitlab-plugin.
What version fixes CVE-2022-43411?
Upgrading to 1.5.36 (or the latest patched release for your respective branch) resolves the vulnerability.
Is gitlab-plugin affected?
Yes, org.jenkins-ci.plugins:gitlab-plugin is affected in releases prior to 1.5.36. Upgrade your dependency to 1.5.36 or later.
What is the CVSS score of CVE-2022-43411?
CVE-2022-43411 has a CVSS v3.1 base score of 3.7 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2022-43411?
CVE-2022-43411 is classified under CWE-203: Observable Discrepancy (The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.).
How can I check Maven dependencies for CVE-2022-43411?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.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-f9f9-4r63-4qcc",
  "modified" : "2022-12-16T17:22:29Z",
  "published" : "2022-10-19T19:00:22Z",
  "aliases" : [ "CVE-2022-43411" ],
  "summary" : "Non-constant time webhook token comparison in Jenkins GitLab Plugin",
  "details" : "GitLab Plugin 1.5.35 and earlier does not use a constant-time comparison when checking whether the provided and expected webhook token are equal.\n\nThis could potentially allow attackers to use statistical methods to obtain a valid webhook token.\n\nGitLab Plugin 1.5.36 uses a constant-time comparison when validating the webhook token.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:gitlab-plugin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.36"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.5.35"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-43411"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/gitlab-plugin/commit/882f84c6a42b42b74ff7c9803d814f61b8fde0ed"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/gitlab-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2022-10-19/#SECURITY-2877"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2022/10/19/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-203", "CWE-208" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-10-19T22:22:43Z",
    "nvd_published_at" : "2022-10-19T16:15:00Z"
  }
}