CVE-2020-25860

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.

CVSS v3.0 6.6 MEDIUM
CVSS v2.0 7.1 HIGH

6.6^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.7 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.1^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:H/Au:S/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector NETWORK

Access Complexity HIGH

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vv	Exploit Third Party Advisory
https://www.vdoo.com/blog/cve-2020-25860-significant-vulnerability-discovered-rauc-embedded-firmware-update-framework	Exploit Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:pengutronix:rauc:*:*:*:*:*:*:*:*

Information

Published : 2020-12-21 10:15

Updated : 2020-12-29 06:36

NVD link : CVE-2020-25860

Mitre link : CVE-2020-25860

JSON object : View

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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Products Affected

pengutronix

rauc

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