title: Opensc: potential pin bypass when card tracks its own login state
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.
problem types: Improper Authentication
affected:
{
product: OpenSC
vendor: n/a
versions:
version: 0.24.0-rc1, status: unaffected
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: opensc
defaultStatus: affected
versions:
version: 0:0.20.0-7.el8_9, lessThan: *, versionType: rpm, status: unaffected
cpe: cpe:/o:redhat:enterprise_linux:8::baseos
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 9
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: opensc
defaultStatus: affected
versions:
version: 0:0.23.0-3.el9_3, lessThan: *, versionType: rpm, status: unaffected
cpe: cpe:/o:redhat:enterprise_linux:9::baseos
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 7
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: opensc
defaultStatus: unknown
cpes: cpe:/o:redhat:enterprise_linux:7
}
{
product: Fedora
vendor: Fedora
collectionURL: https://packages.fedoraproject.org/
packageName: opensc
defaultStatus: affected
}
metrics:
other: [
content: {'value': 'Moderate', 'namespace': 'https://access.redhat.com/security/updates/classification/'}
type: Red Hat severity rating
]