CVE Vulnerability

CVE-2021-32033

Protectimus SLIM NFC 70 10.01 devices allow a Time Traveler attack in which attackers can predict TOTP passwords in certain situations. The time value used by the device can be set independently from the used seed value for generating time-based one-time passwords, without authentication. Thus, an attacker with short-time physical access to a device can set the internal real-time clock (RTC) to the future, generate one-time passwords, and reset the clock to the current time. This allows the generation of valid future time-based one-time passwords without having further access to the hardware token.

1.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

4.6 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.9 / Impact : 3.6

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-007.txt Exploit Third Party Advisory
http://seclists.org/fulldisclosure/2021/Jun/39 Mailing List Third Party Advisory
http://packetstormsecurity.com/files/163223/Protectimus-SLIM-NFC-Time-Manipulation.html Third Party Advisory VDB Entry
Configurations

Configuration 1
Information

Published : 2021-06-16 12:15

Updated : 2022-07-12 05:42

NVD link : CVE-2021-32033

Mitre link : CVE-2021-32033

Products Affected
No products.
CWE
CWE-335

Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)