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TI-2021-02385 Aliases CVE-2021-3421GHSA-f7ww-c7v4-g682

Improper signature verification in rpm

Priority LOW 26CWE-347Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 4 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-347.

Summary

A flaw was found in the RPM package in the read functionality. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package or compromise an RPM repository, to cause RPM database corruption. The highest threat from this vulnerability is to data integrity. This flaw affects RPM versions before 4.17.0-alpha.

Why it matters now

EPSS 0.00646 51st percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 4 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—rpmrpm 4.17.0-alpha—No fix listedCNA
  • rpm Vendor— Affected rpm 4.17.0-alpha Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*before 4.16.1.3VulnerableRpm
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*32VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
  • cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:* Versions before 4.16.1.3 Vulnerable ·Rpm
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject

Remediation

Red Hat 2 advisories

  • RHSA-2021:2791 Released 2021-07-20 · Red Hat rating Moderate
    rpm security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) rpm-build-4.14.2-38.el8_2
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) python3-rpm-4.14.2-38.el8_2, rpm-4.14.2-38.el8_2, rpm-apidocs-4.14.2-38.el8_2 +10
  • RHSA-2021:2574 Released 2021-06-29 · Red Hat rating Moderate
    rpm security update
    • Red Hat Enterprise Linux AppStream (v. 8) rpm-build-4.14.3-14.el8_4, rpm-plugin-fapolicyd-4.14.3-14.el8_4
    • Red Hat Enterprise Linux BaseOS (v. 8) python3-rpm-4.14.3-14.el8_4, rpm-4.14.3-14.el8_4, rpm-apidocs-4.14.3-14.el8_4 +10

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:2574
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2021:2791
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:2574
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2021:2791
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3421
  2. 2026-10-03 Alias added: GHSA-f7ww-c7v4-g682
  3. 2026-10-18 EPSS moved to the below the 50th percentile
  4. 2026-10-19 EPSS moved to the 50th–90th percentile

References

Patch 1

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences