CVE-2023-33221 MEDIUM

CVE-2023-33221: Heap Buffer Overflow when reading DESFire card

Vendor Idemia
Product SIGMA Lite & Lite +
Weakness CWE-122
Published December 15, 2023
Last update August 2, 2024

CVSS base score

6.8/10
Attack vector Physical
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

When reading DesFire keys, the function that reads the card isn't properly checking the boundaries when copying internally the data received. This allows a heap based buffer overflow that could lead to a potential Remote Code Execution on the targeted device. This is especially problematic if you use Default DESFire key.

Key dates

02Disclosure timeline

December 15, 2023 CVE published
August 2, 2024 Record updated