CVE-2023-40343: Tuleap oauth Jenkins Tuleap Authentication Plugin Non-constant Vulnerability

LOW
Advisory Identifier: GHSA-5r33-mgjf-6656
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CVSS 3.7
CWE-203
Published
Advisory Summary

CVE-2023-40343 is a LOW (CVSS 3.7) jenkins tuleap authentication plugin non-constant vulnerability (CWE-203: Observable Discrepancy) affecting Tuleap oauth libraries in the Maven ecosystem. The issue involves jenkins tuleap authentication plugin non-constant time token comparison. Remediation is available by upgrading affected packages to version 1.1.21.

CVE-2023-40343 at a Glance

CVE Identifier CVE-2023-40343
GHSA Identifier GHSA-5r33-mgjf-6656
Severity LOW
CVSS v3.1 Base Score 3.7
CWE Classification CWE-203: Observable Discrepancy
Affected Product Tuleap oauth
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-2023-40343

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

io.jenkins.plugins:tuleap-oauth fixed: 1.1.21 
<dependency>
    <groupId>io.jenkins.plugins</groupId>
    <artifactId>tuleap-oauth</artifactId>
    <version>1.1.21</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=io.jenkins.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-40343, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.jenkins.plugins

Analyze the terminal output to locate any version of Tuleap oauth in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.21), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.jenkins.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-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 Tuleap oauth, 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 Tuleap Authentication Plugin 1.1.20 and earlier does not use a constant-time comparison when checking whether two authentication tokens are equal. This could potentially allow attackers to use statistical methods to obtain a valid authentication token. Tuleap Authentication Plugin 1.1.21 uses a constant-time comparison when validating authentication tokens.

CVE-2023-40343 Affected Tuleap oauth Versions

1 component(s)
Fixed Versions:
1.1.21
Product / Package Ecosystem Affected Versions Fixed Version
io.jenkins.plugins:tuleap-oauth
maven/io.jenkins.plugins/tuleap-oauth
Maven
< 1.1.21
1.1.21

References

NVD — CVE-2023-40343 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-40343
Tuleap oauth Security Information SECURITY
https://www.jenkins.io/security/advisory/2023-08-16/#SECURITY-3229
Tuleap oauth Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/08/16/3

Frequently Asked Questions

What is CVE-2023-40343?
CVE-2023-40343 is a security vulnerability in Tuleap oauth involving Jenkins Tuleap Authentication Plugin non-constant time token comparison under CWE-203: Observable Discrepancy.
Which Tuleap oauth versions are affected?
Affected versions include releases prior to 1.1.21 across affected packages: io.jenkins.plugins:tuleap-oauth.
What version fixes CVE-2023-40343?
Upgrading to 1.1.21 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tuleap-oauth affected?
Yes, io.jenkins.plugins:tuleap-oauth is affected in releases prior to 1.1.21. Upgrade your dependency to 1.1.21 or later.
What is the CVSS score of CVE-2023-40343?
CVE-2023-40343 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-2023-40343?
CVE-2023-40343 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-2023-40343?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.jenkins.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-5r33-mgjf-6656",
  "modified" : "2023-08-16T21:10:56Z",
  "published" : "2023-08-16T15:30:18Z",
  "aliases" : [ "CVE-2023-40343" ],
  "summary" : "Jenkins Tuleap Authentication Plugin non-constant time token comparison",
  "details" : "Jenkins Tuleap Authentication Plugin 1.1.20 and earlier does not use a constant-time comparison when checking whether two authentication tokens are equal.\n\nThis could potentially allow attackers to use statistical methods to obtain a valid authentication token.\n\nTuleap Authentication Plugin 1.1.21 uses a constant-time comparison when validating authentication tokens.",
  "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" : "io.jenkins.plugins:tuleap-oauth"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.21"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-40343"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2023-08-16/#SECURITY-3229"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2023/08/16/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-203" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-16T21:10:56Z",
    "nvd_published_at" : "2023-08-16T15:15:11Z"
  }
}