CVE-2022-36885: Github Jenkins GitHub Plugin Uses Weak Vulnerability

LOW
Advisory Identifier: GHSA-mxcc-7h5m-x57r
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CVSS 3.1
CWE-203 CWE-208
Published
Advisory Summary

CVE-2022-36885 is a LOW (CVSS 3.1) jenkins github plugin uses weak vulnerability (CWE-203: Observable Discrepancy) affecting Github libraries in the Maven ecosystem. The issue involves jenkins github plugin uses weak webhook signature function. Remediation is available by upgrading affected packages to version 1.34.5.

CVE-2022-36885 at a Glance

CVE Identifier CVE-2022-36885
GHSA Identifier GHSA-mxcc-7h5m-x57r
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-203: Observable Discrepancy
Affected Product Github
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.1

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
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-2022-36885

To remediate this vulnerability, upgrade all affected Github dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.coravy.hudson.plugins.github:github fixed: 1.34.5 
<dependency>
    <groupId>com.coravy.hudson.plugins.github</groupId>
    <artifactId>github</artifactId>
    <version>1.34.5</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=com.coravy.hudson.plugins.github

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-36885, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.coravy.hudson.plugins.github

Analyze the terminal output to locate any version of Github in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.34.5), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.coravy.hudson.plugins.github 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 Github, 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 GitHub Plugin 1.34.4 and earlier uses a non-constant time comparison function when checking whether the provided and computed webhook signatures are equal, allowing attackers to use statistical methods to obtain a valid webhook signature. GitHub Plugin 1.34.5 uses a constant-time comparison when validating the webhook signature.

CVE-2022-36885 Affected Github Versions

1 component(s)
Fixed Versions:
1.34.5
Product / Package Ecosystem Affected Versions Fixed Version
com.coravy.hudson.plugins.github:github
maven/com.coravy.hudson.plugins.github/github
Maven
< 1.34.5
1.34.5

References

NVD — CVE-2022-36885 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-36885
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/github-plugin/commit/11d1d79ebf85248dc43432389746c1ecc3452b6a
Github Source Repository REPOSITORY
https://github.com/jenkinsci/github-plugin
Github Release RELEASE
https://github.com/jenkinsci/github-plugin/releases/tag/v1.34.5
plugins.jenkins.io/github-issues WEB
https://plugins.jenkins.io/github-issues
Github Security Information SECURITY
https://www.jenkins.io/security/advisory/2022-07-27/#SECURITY-1849
Github Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/07/27/1

Frequently Asked Questions

What is CVE-2022-36885?
CVE-2022-36885 is a security vulnerability in Github involving Jenkins GitHub plugin uses weak webhook signature function under CWE-203: Observable Discrepancy.
Which Github versions are affected?
Affected versions include releases prior to 1.34.5 across affected packages: com.coravy.hudson.plugins.github:github.
What version fixes CVE-2022-36885?
Upgrading to 1.34.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github affected?
Yes, com.coravy.hudson.plugins.github:github is affected in releases prior to 1.34.5. Upgrade your dependency to 1.34.5 or later.
What is the CVSS score of CVE-2022-36885?
CVE-2022-36885 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2022-36885?
CVE-2022-36885 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-2022-36885?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.coravy.hudson.plugins.github'. 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-mxcc-7h5m-x57r",
  "modified" : "2024-01-05T13:44:46Z",
  "published" : "2022-07-28T00:00:43Z",
  "aliases" : [ "CVE-2022-36885" ],
  "summary" : "Jenkins GitHub plugin uses weak webhook signature function",
  "details" : "Jenkins GitHub Plugin 1.34.4 and earlier uses a non-constant time comparison function when checking whether the provided and computed webhook signatures are equal, allowing attackers to use statistical methods to obtain a valid webhook signature. GitHub Plugin 1.34.5 uses a constant-time comparison when validating the webhook signature.\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.coravy.hudson.plugins.github:github"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.34.5"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.34.4"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-36885"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/github-plugin/commit/11d1d79ebf85248dc43432389746c1ecc3452b6a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/github-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/github-plugin/releases/tag/v1.34.5"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.jenkins.io/github-issues"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2022-07-27/#SECURITY-1849"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2022/07/27/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-203", "CWE-208" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-24T20:44:20Z",
    "nvd_published_at" : "2022-07-27T15:15:00Z"
  }
}