Vulnerabilities > CVE-2020-26939 - Information Exposure Through Discrepancy vulnerability in Bouncycastle products

CVSS 5.3 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

LOW

Integrity impact

NONE

Availability impact

NONE

network

low complexity

bouncycastle

CWE-203

NVD

Published: 2020-11-02

Updated: 2023-11-07

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Bouncycastle Bouncycastle Legion OF THE Bouncy Castle Fips Java API - Bouncycastle Legion OF THE Bouncy Castle 1.00 Bouncycastle Legion OF THE Bouncy Castle 1.01 Bouncycastle Legion OF THE Bouncy Castle 1.02 Bouncycastle Legion OF THE Bouncy Castle 1.03 Bouncycastle Legion OF THE Bouncy Castle 1.04 Bouncycastle Legion OF THE Bouncy Castle 1.05 Bouncycastle Legion OF THE Bouncy Castle 1.06 Bouncycastle Legion OF THE Bouncy Castle 1.07 Bouncycastle Legion OF THE Bouncy Castle 1.08 Bouncycastle Legion OF THE Bouncy Castle 1.09 Bouncycastle Legion OF THE Bouncy Castle 1.10 Bouncycastle Legion OF THE Bouncy Castle 1.11 Bouncycastle Legion OF THE Bouncy Castle 1.12 Bouncycastle Legion OF THE Bouncy Castle 1.13 Bouncycastle Legion OF THE Bouncy Castle 1.14 Bouncycastle Legion OF THE Bouncy Castle 1.15 Bouncycastle Legion OF THE Bouncy Castle 1.16 Bouncycastle Legion OF THE Bouncy Castle 1.17 Bouncycastle Legion OF THE Bouncy Castle 1.18 Bouncycastle Legion OF THE Bouncy Castle 1.19 Bouncycastle Legion OF THE Bouncy Castle 1.20 Bouncycastle Legion OF THE Bouncy Castle 1.21 Bouncycastle Legion OF THE Bouncy Castle 1.22 Bouncycastle Legion OF THE Bouncy Castle 1.23 Bouncycastle Legion OF THE Bouncy Castle 1.24 Bouncycastle Legion OF THE Bouncy Castle 1.25 Bouncycastle Legion OF THE Bouncy Castle 1.26 Bouncycastle Legion OF THE Bouncy Castle 1.27 Bouncycastle Legion OF THE Bouncy Castle 1.28 Bouncycastle Legion OF THE Bouncy Castle 1.29 Bouncycastle Legion OF THE Bouncy Castle 1.30 Bouncycastle Legion OF THE Bouncy Castle 1.31 Bouncycastle Legion OF THE Bouncy Castle 1.32 Bouncycastle Legion OF THE Bouncy Castle 1.33 Bouncycastle Legion OF THE Bouncy Castle 1.34 Bouncycastle Legion OF THE Bouncy Castle 1.35 Bouncycastle Legion OF THE Bouncy Castle 1.36 Bouncycastle Legion OF THE Bouncy Castle 1.37 Bouncycastle Legion OF THE Bouncy Castle 1.38 Bouncycastle Legion OF THE Bouncy Castle 1.39 Bouncycastle Legion OF THE Bouncy Castle 1.40 Bouncycastle Legion OF THE Bouncy Castle 1.41 Bouncycastle Legion OF THE Bouncy Castle 1.42 Bouncycastle Legion OF THE Bouncy Castle 1.43 Bouncycastle Legion OF THE Bouncy Castle 1.44 Bouncycastle Legion OF THE Bouncy Castle 1.45 Bouncycastle Legion OF THE Bouncy Castle 1.46 Bouncycastle Legion OF THE Bouncy Castle 1.47 Bouncycastle Legion OF THE Bouncy Castle 1.48 Bouncycastle Legion OF THE Bouncy Castle 1.49 Bouncycastle Legion OF THE Bouncy Castle 1.50 Bouncycastle Legion OF THE Bouncy Castle 1.51 Bouncycastle Legion OF THE Bouncy Castle 1.52 Bouncycastle Legion OF THE Bouncy Castle 1.53 Bouncycastle Legion OF THE Bouncy Castle 1.54 Bouncycastle Legion OF THE Bouncy Castle 1.55 Bouncycastle Legion OF THE Bouncy Castle 1.56 Bouncycastle Legion OF THE Bouncy Castle 1.57 Bouncycastle Legion OF THE Bouncy Castle 1.58 Bouncycastle Legion OF THE Bouncy Castle 1.59 Bouncycastle Legion OF THE Bouncy Castle 1.60	62

Common Weakness Enumeration (CWE)

CWE-203 - Information Exposure Through Discrepancy

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References