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A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

CVE-2023-5992 identifies a vulnerability in the OpenSC component integrated into Red Hat Enterprise Linux 8, specifically related to the handling of PKCS#1 encryption padding removal. The vulnerability arises because the padding removal process is not implemented in a side-channel resistant manner. Side-channel attacks exploit indirect information leaks such as timing, power consumption, or electromagnetic emissions during cryptographic operations to infer sensitive data. In this case, the observable discrepancy during padding removal could allow an attacker to gradually recover private cryptographic keys or other sensitive information. The vulnerability has a CVSS 3.1 base score of 5.6, reflecting medium severity, with an attack vector of network (AV:N), high attack complexity (AC:H), no privileges required (PR:N), and no user interaction (UI:N). The impact affects confidentiality, integrity, and availability to a limited degree (C:L/I:L/A:L). Although no known exploits are currently reported in the wild, the vulnerability poses a risk in environments where attackers can observe cryptographic operations remotely or locally. Red Hat Enterprise Linux 8 users should monitor for patches and advisories from Red Hat and OpenSC maintainers. The vulnerability underscores the importance of implementing cryptographic operations with constant-time algorithms and side-channel resistant coding practices to prevent leakage of private data through indirect channels.

Detailed information about CVE-2023-5992: Observable Discrepancy in Red Hat Red Hat Enterprise Linux 8 affecting Red Hat Red Hat Enterprise Linux 8. Get real-ti

CVE-2023-5992: Observable Discrepancy in Red Hat Red Hat Enterprise Linux 8 - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-5992: Observable Discrepancy in Red Hat Red Hat Enterprise Linux 8

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