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 users awareness.
Weakness
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Opensc | Opensc_project | * | 0.23.0 (including) |
| Red Hat Enterprise Linux 8 | RedHat | opensc-0:0.20.0-7.el8_9 | * |
| Red Hat Enterprise Linux 9 | RedHat | opensc-0:0.23.0-3.el9_3 | * |
| Opensc | Ubuntu | bionic | * |
| Opensc | Ubuntu | esm-apps/focal | * |
| Opensc | Ubuntu | esm-apps/jammy | * |
| Opensc | Ubuntu | focal | * |
| Opensc | Ubuntu | jammy | * |
| Opensc | Ubuntu | lunar | * |
| Opensc | Ubuntu | mantic | * |
| Opensc | Ubuntu | trusty | * |
| Opensc | Ubuntu | upstream | * |
| Opensc | Ubuntu | xenial | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/114.html
- https://cwe.mitre.org/data/definitions/115.html
- https://cwe.mitre.org/data/definitions/151.html
- https://cwe.mitre.org/data/definitions/194.html
- https://cwe.mitre.org/data/definitions/22.html
- https://cwe.mitre.org/data/definitions/57.html
- https://cwe.mitre.org/data/definitions/593.html
- https://cwe.mitre.org/data/definitions/633.html
- https://cwe.mitre.org/data/definitions/650.html
- https://cwe.mitre.org/data/definitions/94.html
References
- https://access.redhat.com/errata/RHSA-2023:7876
- https://access.redhat.com/errata/RHSA-2023:7879
- https://access.redhat.com/security/cve/CVE-2023-40660
- https://bugzilla.redhat.com/show_bug.cgi?id=2240912
- https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651
- https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1
- https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories
- http://www.openwall.com/lists/oss-security/2023/12/13/2
- https://access.redhat.com/errata/RHSA-2023:7876
- https://access.redhat.com/errata/RHSA-2023:7879
- https://access.redhat.com/security/cve/CVE-2023-40660
- https://bugzilla.redhat.com/show_bug.cgi?id=2240912
- https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651
- https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1
- https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories
- https://lists.debian.org/debian-lts-announce/2023/11/msg00024.html
- https://lists.debian.org/debian-lts-announce/2024/12/msg00026.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/