amank22/ApkSize-Analyzer

CVE-2020-26939 (Medium) detected in bcprov-jdk15on-1.56.jar

Closed this issue · 1 comments

mend-bolt-for-github commented

CVE-2020-26939 - Medium Severity Vulnerability

Vulnerable Library - bcprov-jdk15on-1.56.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 to JDK 1.8.

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

Path to dependency file: ApkSize-Analyzer/build.gradle

Path to vulnerable library: /home/wss-scanner/.gradle/caches/modules-2/files-2.1/org.bouncycastle/bcprov-jdk15on/1.56/a153c6f9744a3e9dd6feab5e210e1c9861362ec7/bcprov-jdk15on-1.56.jar

Dependency Hierarchy:

  • apkanalyzer-27.1.1.jar (Root Library)
    • sdk-common-27.1.1.jar
      • ❌ bcprov-jdk15on-1.56.jar (Vulnerable Library)

Found in HEAD commit: 6789b8db3509344e44824f785e0bbf30b0bac28b

Found in base branch: main

Vulnerability Details

In Legion of the Bouncy Castle BC before 1.61 and BC-FJA before 1.0.1.2, attackers can obtain sensitive information about a private exponent because of Observable Differences in Behavior to Error Inputs. This occurs in org.bouncycastle.crypto.encodings.OAEPEncoding. Sending invalid ciphertext that decrypts to a short payload in the OAEP Decoder could result in the throwing of an early exception, potentially leaking some information about the private exponent of the RSA private key performing the encryption.

Publish Date: 2020-11-02

URL: CVE-2020-26939

CVSS 3 Score Details (5.3)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://github.com/bcgit/bc-java/wiki/CVE-2020-26939

Release Date: 2020-10-11

Fix Resolution: org.bouncycastle:bcprov-jdk14:1.61,org.bouncycastle:bcprov-ext-debug-jdk15on:1.61,org.bouncycastle:bcprov-debug-jdk15on:1.61,org.bouncycastle:bcprov-ext-jdk15on:1.61,org.bouncycastle:bcprov-jdk15on:1.61

Step up your Open Source Security Game with WhiteSource here

stale commented

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.