CVE-2023-40660

Summary

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 Software

VendorProductVersion RangeStatus
0.17.0 < 0.24.0affected
Red HatRed Hat Enterprise Linux 80:0.20.0-7.el8_9 < *unaffected
Red HatRed Hat Enterprise Linux 90:0.23.0-3.el9_3 < *unaffected

Weaknesses

  • CWE-287: Improper Authentication

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References