CVE-2023-33201 (Medium) detected in bcprov-jdk15on-1.70.jar - autoclosed

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CVE-2023-33201 - Medium Severity Vulnerability

Vulnerable Library - bcprov-jdk15on-1.70.jar

The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 and up.

Library home page: https://www.bouncycastle.org/java.html

Path to dependency file: /build.gradle

Path to vulnerable library: /home/wss-scanner/.gradle/caches/modules-2/files-2.1/org.bouncycastle/bcprov-jdk15on/1.70/4636a0d01f74acaf28082fb62b317f1080118371/bcprov-jdk15on-1.70.jar

Dependency Hierarchy:

• ❌ bcprov-jdk15on-1.70.jar (Vulnerable Library)

Found in HEAD commit: e0ea1da309a288ef79bb45dcc7c48ce381bb145a

Found in base branch: main

Vulnerability Details

Bouncy Castle provides the X509LDAPCertStoreSpi.java class which can be used in conjunction with the CertPath API for validating certificate paths. Pre-1.73 the implementation did not check the X.500 name of any certificate, subject, or issuer being passed in for LDAP wild cards, meaning the presence of a wild car may lead to Information Disclosure.

A potential attack would be to generate a self-signed certificate with a subject name that contains special characters, e.g: CN=Subject*)(objectclass=. This will be included into the filter and provides the attacker ability to specify additional attributes in the search query. This can be exploited as a blind LDAP injection: an attacker can enumerate valid attribute values using the boolean blind injection technique. The exploitation depends on the structure of the target LDAP directory, as well as what kind of errors are exposed to the user.

Changes to the X509LDAPCertStoreSpi.java class add the additional checking of any X.500 name used to correctly escape wild card characters.

The vulnerability is fixed in BC version 1.74.

Publish Date: 2023-05-18

URL: CVE-2023-33201

CVSS 3 Score Details (6.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2023-05-18

Fix Resolution: org.bouncycastle:bcprov-ext-jdk18on:1.74, org.bouncycastle:bcprov-jdk18on:1.74, org.bouncycastle:bcprov-debug-jdk18on:1.74, org.bouncycastle:bcprov-ext-debug-jdk18on:1.74, org.bouncycastle:bcprov-ext-jdk15to18:1.74, org.bouncycastle:bcprov-jdk15to18:1.74, org.bouncycastle:bcprov-debug-jdk14:1.74, org.bouncycastle:bcprov-debug-jdk15to18:1.74, org.bouncycastle:bcprov-ext-debug-jdk14:1.74, org.bouncycastle:bcprov-ext-debug-jdk15to18:1.74, org.bouncycastle:bcprov-jdk14:1.74

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✔️ This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.