CVE-2023-46657: Gogs webhook Jenkins Gogs Plugin Uses Non-constant Vulnerability

LOW
Advisory Identifier: GHSA-885r-hhpr-cc9p
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CVSS 3.7
CWE-208 CWE-697
Published
Advisory Summary

CVE-2023-46657 is a LOW (CVSS 3.7) jenkins gogs plugin uses non-constant vulnerability (CWE-208: Observable Timing Discrepancy) affecting Gogs webhook libraries in the Maven ecosystem. The issue involves jenkins gogs plugin uses non-constant time webhook token comparison. Remediation is available in the latest vendor maintenance releases.

CVE-2023-46657 at a Glance

CVE Identifier CVE-2023-46657
GHSA Identifier GHSA-885r-hhpr-cc9p
Severity LOW
CVSS v3.1 Base Score 3.7
CWE Classification CWE-208: Observable Timing Discrepancy
Affected Product Gogs webhook
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-2023-46657

To remediate this vulnerability, upgrade all affected Gogs webhook 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:gogs-webhook fixed: Latest secure release 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>gogs-webhook</artifactId>
    <version>Latest secure release</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-2023-46657, 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 Gogs webhook in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-208: Observable Timing Discrepancy, where two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. In Gogs webhook, 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 Gogs Plugin 1.0.15 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. As of publication of this advisory, there is no fix.

CVE-2023-46657 Affected Gogs webhook Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:gogs-webhook
maven/org.jenkins-ci.plugins/gogs-webhook
Maven
≤ 1.0.15

References

NVD — CVE-2023-46657 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-46657
Gogs webhook Source Repository REPOSITORY
https://github.com/jenkinsci/gogs-webhook-plugin
Gogs webhook Security Information SECURITY
https://www.jenkins.io/security/advisory/2023-10-25/#SECURITY-2896
Gogs webhook Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/10/25/2

Frequently Asked Questions

What is CVE-2023-46657?
CVE-2023-46657 is a security vulnerability in Gogs webhook involving Jenkins Gogs Plugin uses non-constant time webhook token comparison under CWE-208: Observable Timing Discrepancy.
Which Gogs webhook versions are affected?
Affected versions include releases prior to current release patches across affected packages: org.jenkins-ci.plugins:gogs-webhook.
What version fixes CVE-2023-46657?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is gogs-webhook affected?
Yes, org.jenkins-ci.plugins:gogs-webhook is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2023-46657?
CVE-2023-46657 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-2023-46657?
CVE-2023-46657 is classified under CWE-208: Observable Timing Discrepancy (Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.).
How can I check Maven dependencies for CVE-2023-46657?
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-885r-hhpr-cc9p",
  "modified" : "2023-11-02T16:56:29Z",
  "published" : "2023-10-25T18:32:25Z",
  "aliases" : [ "CVE-2023-46657" ],
  "summary" : "Jenkins Gogs Plugin uses non-constant time webhook token comparison",
  "details" : "Jenkins Gogs Plugin 1.0.15 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\nAs of publication of this advisory, there is no fix.",
  "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:gogs-webhook"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0.15"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-46657"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/gogs-webhook-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2023-10-25/#SECURITY-2896"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2023/10/25/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-208", "CWE-697" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-30T14:55:53Z",
    "nvd_published_at" : "2023-10-25T18:17:40Z"
  }
}