CVE-2021-20271

HIGH EPSS 52.8%
Published Mar 26, 20215y ago · Modified Jun 17, 20262w ago
7.0 CVSS 3.1
High
Find Similar
Published Mar 26, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.0
Exploitability
1.0
Impact
5.9
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 Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
52.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-345

Affected Products 14

VendorProductVersionRange
rpmrpm*≥4.15.0  –  <4.15.1.3
rpmrpm*≥4.16.0  –  <4.16.1.3
rpmrpm4.15.0any
rpmrpm4.15.0any
rpmrpm4.15.0any
rpmrpm4.16.0any
rpmrpm4.16.0any
rpmrpm4.16.0any
rpmrpm4.16.0any
redhatenterprise_linux8.0any
fedoraprojectfedora32any
fedoraprojectfedora33any
fedoraprojectfedora34any
starwindsoftwarestarwind_virtual_sanv8any

References 7

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1934125
    Issue TrackingPatchThird Party Advisory
  • github.com https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21
    PatchThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY/
  • security.gentoo.org https://security.gentoo.org/glsa/202107-43
    Third Party Advisory
  • starwindsoftware.com https://www.starwindsoftware.com/security/sw-20220805-0002/
    Third Party Advisory

Remediation

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1934125
    Issue TrackingPatchThird Party Advisory
  • github.com https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21
    PatchThird Party Advisory