CVE-2020-25860

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

21/12/2020

Last modified:

29/12/2020

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.60 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

6.60

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:H/Au:S/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: AV:N/AC:H/Au:S/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): Single
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete