Vulnerabilities > CVE-2023-4535 - Out-of-bounds Read vulnerability in multiple products
Attack vector
PHYSICAL Attack complexity
HIGH Privileges required
NONE Confidentiality impact
LOW Integrity impact
LOW Availability impact
LOW Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 3 | |
| OS | 1 | |
| OS | 2 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overread Buffers An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
References
- https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1
- https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories
- https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651
- https://bugzilla.redhat.com/show_bug.cgi?id=2240914
- https://access.redhat.com/security/cve/CVE-2023-4535
- https://github.com/OpenSC/OpenSC/commit/f1993dc4e0b33050b8f72a3558ee88b24c4063b2
- https://access.redhat.com/errata/RHSA-2023:7879
- https://lists.fedoraproject.org/archives/list/[email protected]/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/