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CVE-2023-4535

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Date: November 6, 2023

An out-of-bounds read vulnerability was found in OpenSC packages within the MyEID driver when handling symmetric key encryption. Exploiting this flaw requires an attacker to have physical access to the computer and a specially crafted USB device or smart card. This flaw allows the attacker to manipulate APDU responses and potentially gain unauthorized access to sensitive data, compromising the system's security.

Language: C

Severity Score

Related Resources (12)

https://bugzilla.redhat.com/show_bug.cgi?id=2240914
https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/
https://nvd.nist.gov/vuln/detail/CVE-2023-4535
https://access.redhat.com/errata/RHSA-2023:7879
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/
https://security-tracker.debian.org/tracker/CVE-2023-4535
https://access.redhat.com/security/cve/CVE-2023-4535
https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651
https://github.com/OpenSC/OpenSC/commit/f1993dc4e0b33050b8f72a3558ee88b24c4063b2
https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1
https://www.mend.io/vulnerability-database/CVE-2023-4535

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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