CVE-2022-34777: Gitlab plugin Cross-Site Scripting Vulnerability

HIGH
Advisory Identifier: GHSA-f655-xhvm-cwp4
Share
CVSS 8.0
CWE-79
Published
Advisory Summary

CVE-2022-34777 is a HIGH (CVSS 8.0) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Gitlab plugin libraries in the Maven ecosystem. The issue involves cross-site scripting in jenkins gitlab plugin. Remediation is available by upgrading affected packages to version 1.5.35.

CVE-2022-34777 at a Glance

CVE Identifier CVE-2022-34777
GHSA Identifier GHSA-f655-xhvm-cwp4
Severity HIGH
CVSS v3.1 Base Score 8.0
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Gitlab plugin
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.0

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:R/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-34777

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: 1.5.35 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>gitlab-plugin</artifactId>
    <version>1.5.35</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-2022-34777, 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 1.5.35), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. 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

Jenkins GitLab Plugin 1.5.34 and earlier does not escape multiple fields inserted into the description of webhook-triggered builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission. GitLab Plugin 1.5.35 does not show user-provided fields in the build cause of webhook-triggered builds. GitLab Plugin 1.5.35 does not show user-provided fields in the build cause of webhook-triggered builds.

CVE-2022-34777 Affected Gitlab plugin Versions

1 component(s)
Fixed Versions:
1.5.35
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:gitlab-plugin
maven/org.jenkins-ci.plugins/gitlab-plugin
Maven
< 1.5.35
1.5.35

References

NVD — CVE-2022-34777 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-34777
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/gitlab-plugin/commit/24e9a99d8151b5345109ef12cddc1ab323baa4ee
Gitlab plugin Source Repository REPOSITORY
https://github.com/jenkinsci/gitlab-plugin
Gitlab plugin Security Information SECURITY
https://www.jenkins.io/security/advisory/2022-06-30/#SECURITY-2316

Frequently Asked Questions

What is CVE-2022-34777?
CVE-2022-34777 is a security vulnerability in Gitlab plugin involving Cross-site Scripting in Jenkins GitLab Plugin under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Gitlab plugin versions are affected?
Affected versions include releases prior to 1.5.35 across affected packages: org.jenkins-ci.plugins:gitlab-plugin.
What version fixes CVE-2022-34777?
Upgrading to 1.5.35 (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 1.5.35. Upgrade your dependency to 1.5.35 or later.
What is the CVSS score of CVE-2022-34777?
CVE-2022-34777 has a CVSS v3.1 base score of 8.0 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-34777?
CVE-2022-34777 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Maven dependencies for CVE-2022-34777?
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-f655-xhvm-cwp4",
  "modified" : "2022-12-09T20:18:23Z",
  "published" : "2022-07-01T00:01:07Z",
  "aliases" : [ "CVE-2022-34777" ],
  "summary" : "Cross-site Scripting in Jenkins GitLab Plugin",
  "details" : "Jenkins GitLab Plugin 1.5.34 and earlier does not escape multiple fields inserted into the description of webhook-triggered builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission. GitLab Plugin 1.5.35 does not show user-provided fields in the build cause of webhook-triggered builds.\n\nGitLab Plugin 1.5.35 does not show user-provided fields in the build cause of webhook-triggered builds.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:gitlab-plugin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.35"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.5.34"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-34777"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/gitlab-plugin/commit/24e9a99d8151b5345109ef12cddc1ab323baa4ee"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/gitlab-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2022-06-30/#SECURITY-2316"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-07-12T18:24:25Z",
    "nvd_published_at" : "2022-06-30T18:15:00Z"
  }
}