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TI-2021-02971 Aliases CVE-2021-4091GHSA-qwhp-2gp7-qhfq

Double free in 389-ds-base

Priority LOW 37CWE-415Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-415 and the CVSS impact.

Summary

A double-free was found in the way 389-ds-base handles virtual attributes context in persistent searches. An attacker could send a series of search requests, forcing the server to behave unexpectedly, and crash.

Why it matters now

EPSS 0.02014 81st percentileScored 2026-11-07
Fix Fixed Red Hat: 4 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—389-ds-base389-ds-base-1.3.10.2—No fix listedCNA
  • 389-ds-base Vendor— Affected 389-ds-base-1.3.10.2 Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:port389:389-ds-base:*:*:*:*:*:*:*:*before 1.3.10.2VulnerablePort389
cpe:2.3:o:redhat:enterprise_linux_desktop:7:*:*:*:*:*:*:*7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:a:port389:389-ds-base:*:*:*:*:*:*:*:* Versions before 1.3.10.2 Vulnerable ·Port389
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7:*:*:*:*:*:*:* Versions 7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 4 advisories

  • RHSA-2022:1410 Released 2022-04-19 · Red Hat rating Low
    389-ds:1.4 security and bug fix update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) 389-ds-base-1.4.3.16-20.module+el8.4.0+14552+b182c759.aarch64::389-ds:1.4, 389-ds-base-1.4.3.16-20.module+el8.4.0+14552+b182c759.ppc64le::389-ds:1.4, 389-ds-base-1.4.3.16-20.module+el8.4.0+14552+b182c759.s390x::389-ds:1.4 +19
  • RHSA-2022:0952 Released 2022-03-16 · Red Hat rating Moderate
    redhat-ds:11.3 security and bug fix update
    • Red Hat Directory Server 11.3 for RHEL 8 389-ds-base-1.4.3.22-4.module+el8dsrv+13893+84b6c18c.src::redhat-ds:11, 389-ds-base-1.4.3.22-4.module+el8dsrv+13893+84b6c18c.x86_64::redhat-ds:11, 389-ds-base-devel-1.4.3.22-4.module+el8dsrv+13893+84b6c18c.x86_64::redhat-ds:11 +5
  • RHSA-2022:0889 Released 2022-03-15 · Red Hat rating Low
    389-ds:1.4 security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 8) 389-ds-base-1.4.3.23-14.module+el8.5.0+14377+c731dc97.aarch64::389-ds:1.4, 389-ds-base-1.4.3.23-14.module+el8.5.0+14377+c731dc97.ppc64le::389-ds:1.4, 389-ds-base-1.4.3.23-14.module+el8.5.0+14377+c731dc97.s390x::389-ds:1.4 +19
Show 1 more Red Hat advisories
  • RHSA-2022:0628 Released 2022-02-22 · Red Hat rating Low
    389-ds-base security and bug fix update
    • Red Hat Enterprise Linux Client Optional (v. 7) 389-ds-base-1.3.10.2-15.el7_9, 389-ds-base-devel-1.3.10.2-15.el7_9, 389-ds-base-libs-1.3.10.2-15.el7_9 +1
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) 389-ds-base-1.3.10.2-15.el7_9, 389-ds-base-devel-1.3.10.2-15.el7_9, 389-ds-base-libs-1.3.10.2-15.el7_9 +1
    • Red Hat Enterprise Linux Server (v. 7) 389-ds-base-1.3.10.2-15.el7_9, 389-ds-base-libs-1.3.10.2-15.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) 389-ds-base-1.3.10.2-15.el7_9, 389-ds-base-devel-1.3.10.2-15.el7_9, 389-ds-base-libs-1.3.10.2-15.el7_9 +1
    • Red Hat Enterprise Linux Workstation (v. 7) 389-ds-base-1.3.10.2-15.el7_9, 389-ds-base-libs-1.3.10.2-15.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) 389-ds-base-devel-1.3.10.2-15.el7_9, 389-ds-base-snmp-1.3.10.2-15.el7_9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Directory Server 11.3 for RHEL 8Fixed RHSA-2022:0952
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2022:0889
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:1410
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2022:0628
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2022:0628
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2022:0628
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:0628
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:0628
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2022:0628
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-4091
  2. 2026-10-03 Alias added: GHSA-qwhp-2gp7-qhfq

References

Patch 1

Other 1

Sources

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