CVE-2023-40660

MEDIUM

6.6

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.

CVE Details

CVSS v3.1 Score6.6

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack VectorPHYSICAL

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published11/6/2023

Last Modified11/3/2025

Sourcenvd

Honeypot Sightings0

Affected Products

opensc_project:openscredhat:enterprise_linux

Weaknesses (CWE)

CWE-287CWE-287

References

https://access.redhat.com/errata/RHSA-2023:7876(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2023:7879(secalert@redhat.com)

https://access.redhat.com/security/cve/CVE-2023-40660(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2240912(secalert@redhat.com)

https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651(secalert@redhat.com)

https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1(secalert@redhat.com)

https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories(secalert@redhat.com)

http://www.openwall.com/lists/oss-security/2023/12/13/2(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2023:7876(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2023:7879(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/security/cve/CVE-2023-40660(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=2240912(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2023/11/msg00024.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2024/12/msg00026.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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