Time-of-Check Time-of-Use Vulnerability in RAUC Update Client by Pengutronix
CVE-2020-25860
6.6MEDIUM
Key Information:
- Vendor
Pengutronix
- Status
- Vendor
- CVE Published:
- 21 December 2020
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2020-25860?
The RAUC update client developed by Pengutronix is susceptible to a Time-of-Check Time-of-Use (TOCTOU) vulnerability. This occurs when signature verification on an update file is performed before the file is reopened for installation. An attacker with access to modify the update file just before installation can exploit this flaw to run arbitrary code on the affected device, potentially compromising its integrity and security.
Affected Version(s)
Pengutronix RAUC All versions before 1.5
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.