CVE-2022-43410: Mercurial Webhook Endpoint Discloses Job Names Vulnerability

MODERATE
Advisory Identifier: GHSA-j7pg-863g-22p6
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CVSS 5.3
CWE-200
Published
Advisory Summary

CVE-2022-43410 is a MODERATE (CVSS 5.3) webhook endpoint discloses job names vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Mercurial libraries in the Maven ecosystem. The issue involves webhook endpoint discloses job names to unauthorized users in jenkins mercurial plugin. Remediation is available by upgrading affected packages to version 1260.vdfb_723cdcc81.

CVE-2022-43410 at a Glance

CVE Identifier CVE-2022-43410
GHSA Identifier GHSA-j7pg-863g-22p6
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Mercurial
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L/I:N/A:N).

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 Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2022-43410

To remediate this vulnerability, upgrade all affected Mercurial 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:mercurial fixed: 1260.vdfb_723cdcc81 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>mercurial</artifactId>
    <version>1260.vdfb_723cdcc81</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-2022-43410, 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 Mercurial in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1260.vdfb_723cdcc81), 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-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 Mercurial, 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

Mercurial Plugin provides a webhook endpoint at `/mercurial/notifyCommit` that can be used to notify Jenkins of changes to an SCM repository. This endpoint receives a repository URL, and Jenkins will schedule polling for all jobs configured with the specified repository. It can be accessed with GET requests and without authentication. In Mercurial Plugin 1251.va_b_121f184902 and earlier, the output of the webhook endpoint will provide information about which jobs were triggered or scheduled for polling, including jobs the user has no permission to access. This allows attackers with knowledge of Mercurial repository URLs to obtain information about the existence of jobs configured with this Mercurial repository. Mercurial Plugin 1260.vdfb_723cdcc81 does not provide the names of jobs for which polling is triggered unless the user has the appropriate Item/Read permission.

CVE-2022-43410 Affected Mercurial Versions

1 component(s)
Fixed Versions:
1260.vdfb_723cdcc81
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:mercurial
maven/org.jenkins-ci.plugins/mercurial
Maven
< 1260.vdfb_723cdcc81
1260.vdfb_723cdcc81

References

NVD — CVE-2022-43410 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-43410
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/mercurial-plugin/commit/dfb723cdcc815875cdf63abd32e314ced5e95ac9
Mercurial Source Repository REPOSITORY
https://github.com/jenkinsci/mercurial-plugin
Mercurial Security Information SECURITY
https://www.jenkins.io/security/advisory/2022-10-19/#SECURITY-2831
Mercurial Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/10/19/3

Frequently Asked Questions

What is CVE-2022-43410?
CVE-2022-43410 is a security vulnerability in Mercurial involving Webhook endpoint discloses job names to unauthorized users in Jenkins Mercurial Plugin under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Mercurial versions are affected?
Affected versions include releases prior to 1260.vdfb_723cdcc81 across affected packages: org.jenkins-ci.plugins:mercurial.
What version fixes CVE-2022-43410?
Upgrading to 1260.vdfb_723cdcc81 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mercurial affected?
Yes, org.jenkins-ci.plugins:mercurial is affected in releases prior to 1260.vdfb_723cdcc81. Upgrade your dependency to 1260.vdfb_723cdcc81 or later.
What is the CVSS score of CVE-2022-43410?
CVE-2022-43410 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2022-43410?
CVE-2022-43410 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-2022-43410?
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-j7pg-863g-22p6",
  "modified" : "2022-12-16T17:17:55Z",
  "published" : "2022-10-19T19:00:18Z",
  "aliases" : [ "CVE-2022-43410" ],
  "summary" : "Webhook endpoint discloses job names to unauthorized users in Jenkins Mercurial Plugin",
  "details" : "Mercurial Plugin provides a webhook endpoint at `/mercurial/notifyCommit` that can be used to notify Jenkins of changes to an SCM repository. This endpoint receives a repository URL, and Jenkins will schedule polling for all jobs configured with the specified repository. It can be accessed with GET requests and without authentication.\n\nIn Mercurial Plugin 1251.va_b_121f184902 and earlier, the output of the webhook endpoint will provide information about which jobs were triggered or scheduled for polling, including jobs the user has no permission to access. This allows attackers with knowledge of Mercurial repository URLs to obtain information about the existence of jobs configured with this Mercurial repository.\n\nMercurial Plugin 1260.vdfb_723cdcc81 does not provide the names of jobs for which polling is triggered unless the user has the appropriate Item/Read permission.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:mercurial"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1260.vdfb_723cdcc81"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "< 1260.vdfb"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-43410"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/mercurial-plugin/commit/dfb723cdcc815875cdf63abd32e314ced5e95ac9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/mercurial-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2022-10-19/#SECURITY-2831"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2022/10/19/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-10-19T20:27:28Z",
    "nvd_published_at" : "2022-10-19T16:15:00Z"
  }
}