Out-of-bounds read in OpenSC - CVE-2023-4535
Published: November 10, 2023
Vulnerability identifier: #VU82975
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-4535
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: OpenSC
Affected software:
OpenSC
OpenSC
Detailed vulnerability description
The vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the MyEID driver when handling symmetric key encryption. An attacker with physical access to the system can use a specially crafted USB device to trigger an out-of-bounds read error and gain access to potentially sensitive information.
How to mitigate CVE-2023-4535
Install updates from vendor's website.
Sources
- 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