CVE-2021-20271

CVSS V2 Medium 5.1 CVSS V3 High 7

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.

Overview

CVE ID
CVE-2021-20271

Assigner
secalert@redhat.com

Vulnerability Status
Modified

Published Version
2021-03-26T17:15:13

Last Modified Date
2023-02-12T22:15:17

Weakness Enumerations

CWE	URL
CWE-345	http://cwe.mitre.org/data/definitions/345.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:rpm:rpm::::::::	1	OR	4.15.0	4.15.1.3
cpe:2.3:a:rpm:rpm::::::::	1	OR	4.16.0	4.16.1.3
cpe:2.3:a:rpm:rpm:4.15.0:alpha::::::	1	OR
cpe:2.3:a:rpm:rpm:4.15.0:beta1::::::	1	OR
cpe:2.3:a:rpm:rpm:4.15.0:rc1::::::	1	OR
cpe:2.3:a:rpm:rpm:4.16.0:alpha::::::	1	OR
cpe:2.3:a:rpm:rpm:4.16.0:beta2::::::	1	OR
cpe:2.3:a:rpm:rpm:4.16.0:beta3::::::	1	OR
cpe:2.3:a:rpm:rpm:4.16.0:rc1::::::	1	OR
cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:32:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:33:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:34:::::::*	1	OR
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build14398::::::	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:H/Au:N/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
HIGH

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
5.1

Severity
MEDIUM

Exploitability Score
4.9

Impact Score
6.4

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL

Attack Compatibility
HIGH

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7

Base Severity
HIGH

Exploitability Score
1

Impact Score
5.9

References

Reference URL	Reference Tags
https://access.redhat.com/errata/RHBA-2021:2854
https://access.redhat.com/errata/RHSA-2021:2574
https://access.redhat.com/errata/RHSA-2021:2791
https://access.redhat.com/errata/RHSA-2021:4771
https://access.redhat.com/errata/RHSA-2021:4785
https://access.redhat.com/errata/RHSA-2021:4975
https://access.redhat.com/security/cve/CVE-2021-20271
https://bugzilla.redhat.com/show_bug.cgi?id=1934125	Issue Tracking Patch Third Party Advisory
https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21	Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY/
https://security.gentoo.org/glsa/202107-43	Third Party Advisory
https://www.starwindsoftware.com/security/sw-20220805-0002/	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-20271
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20271

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:41:40				Added to TrackCVE
2022-12-06 00:31:15	2021-03-26T17:15Z	2021-03-26T17:15:13	CVE Published Date	updated
2022-12-06 00:31:15		2022-10-25T16:42:25	CVE Modified Date	updated
2022-12-06 00:31:15		Analyzed	Vulnerability Status	updated
2022-12-06 00:31:20			References	updated
2023-02-02 23:11:49		2023-02-02T21:20:58	CVE Modified Date	updated
2023-02-02 23:11:49	Analyzed	Modified	Vulnerability Status	updated
2023-02-02 23:11:49			References	updated
2023-02-12 23:11:42		2023-02-12T22:15:17	CVE Modified Date	updated