Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-20271

Severity CVSS v4.0:
Pending analysis
Type:
CWE-345 Insufficient Verification of Data Authenticity
Publication date:
26/03/2021
Last modified:
12/02/2023

Description

A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.00 HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

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

Base Score 3.x
7.00
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:H/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.10 MEDIUM
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
5.10
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:* 4.15.0 (including) 4.15.1.3 (excluding)
cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:* 4.16.0 (including) 4.16.1.3 (excluding)
cpe:2.3:a:rpm:rpm:4.15.0:alpha:*:*:*:*:*:*
cpe:2.3:a:rpm:rpm:4.15.0:beta1:*:*:*:*:*:*
cpe:2.3:a:rpm:rpm:4.15.0:rc1:*:*:*:*:*:*
cpe:2.3:a:rpm:rpm:4.16.0:alpha:*:*:*:*:*:*
cpe:2.3:a:rpm:rpm:4.16.0:beta2:*:*:*:*:*:*
cpe:2.3:a:rpm:rpm:4.16.0:beta3:*:*:*:*:*:*
cpe:2.3:a:rpm:rpm:4.16.0:rc1:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build14398:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools