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Advisories

FreeRDP 3.0.0 before 3.32.0 PIN Brute-Force via Virtual Smartcard

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severity
high
date
Affecting

  • FreeRDP >= 3.0.0, < 3.32.0

CWE
  • CWE-307 Improper Restriction of Excessive Authentication Attempts
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Kushalkhemka, opensec-intelligence, mayank-jangid-moon, skigeek16
Description
FreeRDP 3.0.0 before 3.32.0 contains an improper restriction of excessive authentication attempts in its virtual smartcard GIDS implementation, which stores the PIN retry counter per-handle. A malicious RDP server can exhaust the counter with VERIFY APDUs, then request a new SCardConnect to reset attempts, enabling unbounded online brute-forcing of the configured smartcard PIN.

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