#VU82973 Improper Authorization in OpenSC - CVE-2023-40660
Published: November 10, 2023
Vulnerability identifier: #VU82973
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-40660
CWE-ID: CWE-285
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
OpenSC
OpenSC
Software vendor:
OpenSC
OpenSC
Description
The vulnerability allows an attacker to bypass authorization process.
The vulnerability exists due to a logic error in the authorization process. When a token/card is authenticated by one process, it can perform cryptographic operations in other processes when an empty zero-length pin is passed. An attacker with physical proximity to the system can bypass the OS logon/screen for small permanently connected tokens to computers.
Remediation
Install updates from vendor's website.