CVE-2022-20618: Cloudbees bitbucket branch source Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-w2mh-6xj5-f77f
CVSS 4.3
CWE-732 CWE-862
Published
Advisory Summary

CVE-2022-20618 is a MODERATE (CVSS 4.3) remote code execution vulnerability (CWE-732: Incorrect Permission Assignment for Critical Resource) affecting Cloudbees bitbucket branch source libraries in the Maven ecosystem. The issue involves incorrect permission assignment for critical resource in jenkins bitbucket branch source plugin. Remediation is available by upgrading affected packages to version 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, 2.9.7.2.

CVE-2022-20618 at a Glance

CVE Identifier CVE-2022-20618
GHSA Identifier GHSA-w2mh-6xj5-f77f
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-732: Incorrect Permission Assignment for Critical Resource
Affected Product Cloudbees bitbucket branch source
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.3

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2022-20618

To remediate this vulnerability, upgrade all affected Cloudbees bitbucket 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.

org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source fixed: 746.v350d2781c184
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>cloudbees-bitbucket-branch-source</artifactId>
    <version>746.v350d2781c184</version>
</dependency>
org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source fixed: 725.vd9f8be0fa250
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>cloudbees-bitbucket-branch-source</artifactId>
    <version>725.vd9f8be0fa250</version>
</dependency>
org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source fixed: 2.9.11.2
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>cloudbees-bitbucket-branch-source</artifactId>
    <version>2.9.11.2</version>
</dependency>
org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source fixed: 2.9.7.2
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>cloudbees-bitbucket-branch-source</artifactId>
    <version>2.9.7.2</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-2022-20618, 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 Cloudbees bitbucket branch source in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 746.v350d2781c184), 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-732: Incorrect Permission Assignment for Critical Resource, where the product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. In Cloudbees bitbucket 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

Jenkins Bitbucket Branch Source Plugin prior to 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, and 2.9.7.2 does not perform permission checks in several HTTP endpoints. This allows attackers with Overall/Read access to enumerate credentials IDs of credentials stored in Jenkins. Those can be used as part of an attack to capture the credentials using another vulnerability. An enumeration of credentials IDs in Bitbucket Branch Source Plugin 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, and 2.9.7.2 requires the appropriate permissions.

CVE-2022-20618 Affected Cloudbees bitbucket branch source Versions

4 component(s)
Fixed Versions:
746.v350d2781c184725.vd9f8be0fa2502.9.11.22.9.7.2
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source
Maven
≥ 726.v7e6f53de133c
< 746.v350d2781c184
746.v350d2781c184
org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source
Maven
≥ 720.vbe985dd73d66
< 725.vd9f8be0fa250
725.vd9f8be0fa250
org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source
Maven
≥ 2.9.8
< 2.9.11.2
2.9.11.2
org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source
Maven
< 2.9.7.2
2.9.7.2

References

Frequently Asked Questions

What is CVE-2022-20618?
CVE-2022-20618 is a security vulnerability in Cloudbees bitbucket branch source involving Incorrect Permission Assignment for Critical Resource in Jenkins Bitbucket Branch Source Plugin under CWE-732: Incorrect Permission Assignment for Critical Resource.
Which Cloudbees bitbucket branch source versions are affected?
Affected versions include releases prior to 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, 2.9.7.2 across affected packages: org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source.
What version fixes CVE-2022-20618?
Upgrading to 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, 2.9.7.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is cloudbees-bitbucket-branch-source affected?
Yes, org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source is affected in releases prior to 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, 2.9.7.2. Upgrade your dependency to 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, 2.9.7.2 or later.
What is the CVSS score of CVE-2022-20618?
CVE-2022-20618 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2022-20618?
CVE-2022-20618 is classified under CWE-732: Incorrect Permission Assignment for Critical Resource (The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.).
How can I check Maven dependencies for CVE-2022-20618?
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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-w2mh-6xj5-f77f",
  "modified" : "2023-05-24T17:10:39Z",
  "published" : "2022-01-13T00:01:02Z",
  "aliases" : [ "CVE-2022-20618" ],
  "summary" : "Incorrect Permission Assignment for Critical Resource in Jenkins Bitbucket Branch Source Plugin",
  "details" : "Jenkins Bitbucket Branch Source Plugin prior to 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, and 2.9.7.2 does not perform permission checks in several HTTP endpoints.\n\nThis allows attackers with Overall/Read access to enumerate credentials IDs of credentials stored in Jenkins. Those can be used as part of an attack to capture the credentials using another vulnerability.\n\nAn enumeration of credentials IDs in Bitbucket Branch Source Plugin 746.v350d2781c184, 725.vd9f8be0fa250, 2.9.11.2, and 2.9.7.2 requires the appropriate permissions.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "726.v7e6f53de133c"
      }, {
        "fixed" : "746.v350d2781c184"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "720.vbe985dd73d66"
      }, {
        "fixed" : "725.vd9f8be0fa250"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.9.8"
      }, {
        "fixed" : "2.9.11.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:cloudbees-bitbucket-branch-source"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.9.7.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-20618"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/bitbucket-branch-source-plugin/commit/467ed6c94af8735c4755d53145a54325ae82d073"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/CVEProject/cvelist/blob/2d78eb36f4d084db7fb35f1535d8d84fdcb7d859/2022/20xxx/CVE-2022-20618.json"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/bitbucket-branch-source-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2022-01-12/#SECURITY-2033"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2022/01/12/6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-732", "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-20T22:49:18Z",
    "nvd_published_at" : "2022-01-12T20:15:00Z"
  }
}