CVE-2020-25860 json
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 signat…
published 5y ago modified 4mo ago also EUVD-2020-18493
- cvss
- 6.6
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pengutronix rauc 1.5
- rauc Debian 14, Debian 13, Debian 12 1.5-1
debian advisories DEBIAN-CVE-2020-25860
Is CVE-2020-25860 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
1.45% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vv referenced PoC, tagged "exploit" by a source, unverified
- vdoo.com https://www.vdoo.com/blog/cve-2020-25860-significant-vulnerability-discovered-rauc-embedded-firmware-update-framework referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.1 | AV:N/AC:H/Au:S/C:C/I:C/A:C |
Affected products
- n/a Pengutronix RAUC
Classification
- Weakness
-
- CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
References
-
github.com
/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vv
exploit, third-party-advisory
-
vdoo.com
/blog/cve-2020-25860-significant-vulnerability-discovered-rauc-embedded-firmware-update-framework
exploit, third-party-advisory
Sources
- CVE List CVE-2020-25860
- NVD CVE-2020-25860
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