CVE-2023-40660
opensc - security update
6.6
MEDIUM
CVSS 3.1
EPSS 0.04%
Description
A flaw was found in OpenSC packages that allow a potential PIN bypass. 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. This issue poses a security risk, particularly for OS logon/screen unlock and for small, permanently connected tokens to computers. Additionally, the token can internally track login status. This flaw allows an attacker to gain unauthorized access, carry out malicious actions, or compromise the system without the user's awareness.
How to fix CVE-2023-40660
To remediate CVE-2023-40660, upgrade the affected package to a fixed version below.
- —upgrade to 0.21.0-1+deb11u1 or later
- —upgrade to 0.19.0-1+deb10u3 or later
Is CVE-2023-40660 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 0.21.0-1+deb11u1
- from 0, < 0.19.0-1+deb10u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |