CVE-2023-6258
Linux Debian vulnerability analysis and mitigation

Overview

A security vulnerability (CVE-2023-6258) was identified in the pkcs11-provider, which is associated with Public-Key Cryptography Standards (PKCS#11). The vulnerability was disclosed on January 30, 2024, and could result in a Bleichenbacher-like security flaw (NVD, Ubuntu).

Technical details

The vulnerability has a CVSS 3.1 Base Score of 8.1 (High), with the following metrics: Attack Vector: Network, Attack Complexity: High, Privileges Required: None, User Interaction: None, Scope: Unchanged, and High impact on Confidentiality, Integrity, and Availability. The vulnerability is classified under CWE-1300 and CWE-203, potentially enabling a side-channel attack on PKCS#1 1.5 decryption (Ubuntu).

Impact

If exploited successfully, this vulnerability could enable side-channel attacks on PKCS#1 1.5 decryption operations, potentially compromising the security of cryptographic operations (RedHat).

Mitigation and workarounds

A fix has been implemented in pkcs11-provider version 0.2. The solution involves side-channel proofing of PKCS#1 1.5 paths, as detailed in the provider's GitHub repository (GitHub PR).

Additional resources


SourceThis report was generated using AI

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