PT-2021-19638 · Protectimus · Protectimus Slim Nfc 70

Matthias Deeg · Published 2021-06-16 · Updated 2022-07-12 · CVE-2021-32033

Positive Technologies (AI Summary)

CVSS v3.1

4.6

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Protectimus SLIM NFC 70 version 10.01

Description: The issue allows attackers to predict TOTP passwords in certain situations through a Time Traveler attack. An attacker with short-time physical access to the 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 enables the generation of valid future time-based one-time passwords without having further access to the hardware token.

Recommendations: For Protectimus SLIM NFC 70 version 10.01, as a temporary workaround, consider restricting physical access to the device to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-335

Related Identifiers

CVE-2021-32033

Affected Products

Protectimus Slim Nfc 70

References · 8

• 🔥 http://packetstormsecurity.com/files/163223/Protectimus-SLIM-NFC-Time-Manipulation.html · Exploit
• 🔥 https://syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-007.txt · Exploit
• 🔥 http://seclists.org/fulldisclosure/2021/Jun/39 · Exploit
• https://osv.dev/vulnerability/CVE-2021-32033 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-32033 · Security Note
• https://t.me/defcon_news/79028 · Telegram Post
• https://t.me/cvenotify/16550 · Telegram Post
• https://t.me/cvenotify/16437 · Telegram Post