CVE-2021-32033 Weak cryptography in n/a
Attackers with physical access can manipulate the device clock to predict future TOTP passwords, bypassing two-factor authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-32033?
CVE-2021-32033 is a medium-severity vulnerability in n/a, published on 16 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-335
Which versions are affected by CVE-2021-32033?
It affects 1 product.
Products include Protectimus Slim Nfc 70 Firmware.
How do I fix CVE-2021-32033?
No fix has been published for CVE-2021-32033 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-32033 being exploited?
There is no known exploitation of CVE-2021-32033 in the wild and no public exploit code.
Sources
Also known as GHSA-x83x-q4rh-hv7j.