CVE-2021-20271

Published on: 03/26/2021 12:00:00 AM UTC

Last Modified on: 02/02/2023 09:20:00 PM UTC

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

Certain versions of Fedora from Fedoraproject contain the following vulnerability:

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.

  • CVE-2021-20271 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL HIGH NONE REQUIRED
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 5.1 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK HIGH NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags Link
[SECURITY] Fedora 34 Update: rpm-4.16.1.3-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo MISC lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/
Red Hat Customer Portal - Access to 24x7 support and knowledge access.redhat.com
text/html
URL Logo MISC access.redhat.com/errata/RHSA-2021:4785
CVE-2021-20271 RPM issue in StarWind products www.starwindsoftware.com
text/html
URL Logo MISC www.starwindsoftware.com/security/sw-20220805-0002/
Be much more careful about copying data from the signature header · rpm-software-management/[email protected] · GitHub github.com
text/html
URL Logo MISC github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21
[SECURITY] Fedora 33 Update: rpm-4.16.1.3-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo MISC lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/
Red Hat Customer Portal - Access to 24x7 support and knowledge access.redhat.com
text/html
URL Logo MISC access.redhat.com/errata/RHSA-2021:2791
Red Hat Customer Portal - Access to 24x7 support and knowledge access.redhat.com
text/html
URL Logo MISC access.redhat.com/errata/RHSA-2021:4975
Red Hat Customer Portal - Access to 24x7 support and knowledge access.redhat.com
text/html
URL Logo MISC access.redhat.com/security/cve/CVE-2021-20271
Red Hat Customer Portal - Access to 24x7 support and knowledge access.redhat.com
text/html
URL Logo MISC access.redhat.com/errata/RHBA-2021:2854
[SECURITY] Fedora 32 Update: rpm-4.15.1.1-1.fc32.1 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo MISC lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY/
RPM: Multiple vulnerabilities (GLSA 202107-43) — Gentoo security security.gentoo.org
text/html
URL Logo GENTOO GLSA-202107-43
Red Hat Customer Portal - Access to 24x7 support and knowledge access.redhat.com
text/html
URL Logo MISC access.redhat.com/errata/RHSA-2021:4771
1934125 – (CVE-2021-20271) CVE-2021-20271 rpm: Signature checks bypass via corrupted rpm package bugzilla.redhat.com
text/html
URL Logo MISC bugzilla.redhat.com/show_bug.cgi?id=1934125
Red Hat Customer Portal - Access to 24x7 support and knowledge access.redhat.com
text/html
URL Logo MISC access.redhat.com/errata/RHSA-2021:2574

Related QID Numbers

  • 159287 Oracle Enterprise Linux Security Update for rpm (ELSA-2021-2574)
  • 159540 Oracle Enterprise Linux Security Update for rpm (ELSA-2021-4785)
  • 180326 Debian Security Update for rpm (CVE-2021-20271)
  • 239466 Red Hat Update for rpm (RHSA-2021:2574)
  • 239493 Red Hat Update for rpm (RHSA-2021:2791)
  • 239907 Red Hat Update for rpm (RHSA-2021:4785)
  • 257130 CentOS Security Update for rpm (CESA-2021:4785)
  • 281435 Fedora Security Update for rpm (FEDORA-2021-662680e477)
  • 281436 Fedora Security Update for rpm (FEDORA-2021-8d52a8a999)
  • 281437 Fedora Security Update for rpm (FEDORA-2021-2383d950fd)
  • 330113 IBM AIX Multiple Vulnerabilities due to RPM (rpm_advisory)
  • 352470 Amazon Linux Security Advisory for rpm: ALAS-2021-1521
  • 352485 Amazon Linux Security Advisory for rpm: ALAS2-2021-1689
  • 377409 Alibaba Cloud Linux Security Update for rpm (ALINUX3-SA-2021:0046)
  • 377532 Alibaba Cloud Linux Security Update for rpm (ALINUX2-SA-2021:0067)
  • 501685 Alpine Linux Security Update for rpm
  • 670407 EulerOS Security Update for rpm (EulerOS-SA-2021-1992)
  • 670496 EulerOS Security Update for rpm (EulerOS-SA-2021-2254)
  • 670522 EulerOS Security Update for rpm (EulerOS-SA-2021-2280)
  • 670588 EulerOS Security Update for rpm (EulerOS-SA-2021-2346)
  • 670685 EulerOS Security Update for rpm (EulerOS-SA-2021-2443)
  • 671014 EulerOS Security Update for rpm (EulerOS-SA-2021-2613)
  • 710026 Gentoo Linux RPM Multiple vulnerabilities (GLSA 202107-43)
  • 730371 McAfee Web Gateway Multiple Vulnerabilities (WP-3335,WP-4131,WP-4159,WP-4237,WP-4259,WP-4329,WP-4348,WP-4355,WP-4376,WP-4407,WP-4421)
  • 750965 OpenSUSE Security Update for libdnf (openSUSE-SU-2021:2685-1)
  • 750981 OpenSUSE Security Update for rpm (openSUSE-SU-2021:2682-1)
  • 751248 OpenSUSE Security Update for rpm (openSUSE-SU-2021:1366-1)
  • 752786 SUSE Enterprise Linux Security Update for rpm (SUSE-SU-2022:3939-1)
  • 900173 CBL-Mariner Linux Security Update for rpm 4.14.2
  • 903101 Common Base Linux Mariner (CBL-Mariner) Security Update for rpm (4031)
  • 940261 AlmaLinux Security Update for rpm (ALSA-2021:2574)
  • 960068 Rocky Linux Security Update for rpm (RLSA-2021:2574)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
FedoraprojectFedora32AllAllAll
Operating
System
FedoraprojectFedora33AllAllAll
Operating
System
FedoraprojectFedora34AllAllAll
Operating
System
RedhatEnterprise Linux8.0AllAllAll
ApplicationRpmRpmAllAllAllAll
ApplicationRpmRpm4.15.0alphaAllAll
ApplicationRpmRpm4.15.0beta1AllAll
ApplicationRpmRpm4.15.0rc1AllAll
ApplicationRpmRpm4.16.0alphaAllAll
ApplicationRpmRpm4.16.0beta2AllAll
ApplicationRpmRpm4.16.0beta3AllAll
ApplicationRpmRpm4.16.0rc1AllAll
ApplicationStarwindsoftwareStarwind Virtual Sanv8build14398AllAll
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*:
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*:
  • cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*:
  • 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:a:starwindsoftware:starwind_virtual_san:v8:build14398:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Reddit Logo Icon /r/sysadmin PSA for all RHEL/CentOS admins: enable `repo_gpgcheck=1` for all repos NOW 2021-04-28 00:19:24
Reddit Logo Icon /r/CentOS CVE-2021-20271 Mitigation 2021-06-07 09:02:51
Reddit Logo Icon /r/nutanix AOS 5.20.3 available! 2022-01-25 08:34:08
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