CVE-2023-41935: Azure ad Non-constant Time Nonce Comparison Vulnerability

HIGH
Advisory Identifier: GHSA-hj7p-h74j-6gxj
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CVSS 7.5
CWE-697
Published
Advisory Summary

CVE-2023-41935 is a HIGH (CVSS 7.5) non-constant time nonce comparison vulnerability (CWE-697: Incorrect Comparison) affecting Azure ad libraries in the Maven ecosystem. The issue involves non-constant time nonce comparison in jenkins microsoft entra id (previously azure ad) plugin. Remediation is available by upgrading affected packages to version 397.v907382dd9b, 378.vd6e2874a.

CVE-2023-41935 at a Glance

CVE Identifier CVE-2023-41935
GHSA Identifier GHSA-hj7p-h74j-6gxj
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-697: Incorrect Comparison
Affected Product Azure ad
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:H/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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2023-41935

To remediate this vulnerability, upgrade all affected Azure ad 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:azure-ad fixed: 397.v907382dd9b 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>azure-ad</artifactId>
    <version>397.v907382dd9b</version>
</dependency>
org.jenkins-ci.plugins:azure-ad fixed: 378.vd6e2874a 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>azure-ad</artifactId>
    <version>378.vd6e2874a</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-2023-41935, 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 Azure ad in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 397.v907382dd9b), 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-697: Incorrect Comparison, where the product compares two entities in a security-relevant context, but the comparison is incorrect. In Azure ad, 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 Azure AD Plugin 396.v86ce29279947 and earlier, except 378.380.v545b_1154b_3fb_, uses a non-constant time comparison function when checking whether the provided and expected CSRF protection nonce are equal, potentially allowing attackers to use statistical methods to obtain a valid nonce.

CVE-2023-41935 Affected Azure ad Versions

2 component(s)
Fixed Versions:
397.v907382dd9b378.vd6e2874a
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:azure-ad
maven/org.jenkins-ci.plugins/azure-ad
Maven
≥ 378.380.v545b
< 397.v907382dd9b
397.v907382dd9b
org.jenkins-ci.plugins:azure-ad
maven/org.jenkins-ci.plugins/azure-ad
Maven
< 378.vd6e2874a
378.vd6e2874a

References

NVD — CVE-2023-41935 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-41935
Azure ad Security Information SECURITY
https://www.jenkins.io/security/advisory/2023-09-06/#SECURITY-3227
Azure ad Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/09/06/9

Frequently Asked Questions

What is CVE-2023-41935?
CVE-2023-41935 is a security vulnerability in Azure ad involving Non-constant time nonce comparison in Jenkins Microsoft Entra ID (previously Azure AD) Plugin under CWE-697: Incorrect Comparison.
Which Azure ad versions are affected?
Affected versions include releases prior to 397.v907382dd9b, 378.vd6e2874a across affected packages: org.jenkins-ci.plugins:azure-ad.
What version fixes CVE-2023-41935?
Upgrading to 397.v907382dd9b, 378.vd6e2874a (or the latest patched release for your respective branch) resolves the vulnerability.
Is azure-ad affected?
Yes, org.jenkins-ci.plugins:azure-ad is affected in releases prior to 397.v907382dd9b, 378.vd6e2874a. Upgrade your dependency to 397.v907382dd9b, 378.vd6e2874a or later.
What is the CVSS score of CVE-2023-41935?
CVE-2023-41935 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2023-41935?
CVE-2023-41935 is classified under CWE-697: Incorrect Comparison (The product compares two entities in a security-relevant context, but the comparison is incorrect.).
How can I check Maven dependencies for CVE-2023-41935?
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-hj7p-h74j-6gxj",
  "modified" : "2024-01-30T23:10:45Z",
  "published" : "2023-09-06T15:30:26Z",
  "aliases" : [ "CVE-2023-41935" ],
  "summary" : "Non-constant time nonce comparison in Jenkins Microsoft Entra ID (previously Azure AD) Plugin",
  "details" : "Jenkins Azure AD Plugin 396.v86ce29279947 and earlier, except 378.380.v545b_1154b_3fb_, uses a non-constant time comparison function when checking whether the provided and expected CSRF protection nonce are equal, potentially allowing attackers to use statistical methods to obtain a valid nonce.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:azure-ad"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "378.380.v545b"
      }, {
        "fixed" : "397.v907382dd9b"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 396.v86ce29279947"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:azure-ad"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "378.vd6e2874a"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-41935"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2023-09-06/#SECURITY-3227"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2023/09/06/9"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-697" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-30T23:10:45Z",
    "nvd_published_at" : "2023-09-06T13:15:10Z"
  }
}