CVE-2023-40660
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
23.6%
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.
Affected configurations
References
www.openwall.com/lists/oss-security/2023/12/13/2
access.redhat.com/errata/RHSA-2023:7876
access.redhat.com/errata/RHSA-2023:7879
access.redhat.com/security/cve/CVE-2023-40660
bugzilla.redhat.com/show_bug.cgi?id=2240912
github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651
github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1
github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories
lists.debian.org/debian-lts-announce/2023/11/msg00024.html
lists.fedoraproject.org/archives/list/[email protected]/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/
lists.fedoraproject.org/archives/list/[email protected]/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/
Related
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
23.6%