Vulnerability · Published Dec 21, 2020 · Assigned by VDOO
CVE-2020-25860
Medium 6.6
In plain English
A medium-severity security flaw in Pengutronix RAUC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
The install.c module in the Pengutronix RAUC update client prior to version 1.5 has a Time-of-Check Time-of-Use vulnerability, where signature verification on an update file takes place before the file is reopened for installation. An attacker who can modify the update file just before it is reopened can install arbitrary code on the device.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rauc | 1.5-1 | DEBIAN-CVE-2020-25860 |
| Debian:13 | rauc | 1.5-1 | DEBIAN-CVE-2020-25860 |
| Debian:14 | rauc | 1.5-1 | DEBIAN-CVE-2020-25860 |
| Ubuntu:22.04:LTS | rauc | no fix listed | UBUNTU-CVE-2020-25860 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Pengutronix RAUC | All versions before 1.5 |
Weakness: CWE-367