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CVE-2024-5953· NVD / CVE Program· CNA redhat

389-ds-base: malformed userpassword hash may cause denial of service

A denial of service vulnerability was found in the 389-ds-base LDAP server. This issue may allow an authenticated user to cause a server denial of service while attempting to log in with a user with a malformed hash in their password.

MediumCVSS 5.7 · v3.1—No exploit Fix available
Published
Jun 18, 2024
Updated
Jun 17, 2026
EPSS
0.6% · 46th percentile
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JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
5.7
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • github.com/389ds/389-ds-base 389-ds-base

    • all versionsaffected

  • Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8

    • 8060020250210084424.0ca98e7e and laternot affected · rpm

  • Red Hat Red Hat Directory Server 11.7 for RHEL 8

    • 8080020240909040333.f969626e and laternot affected · rpm

  • Red Hat Red Hat Directory Server 11.9 for RHEL 8

    • 8100020240902112955.37ed7c03 and laternot affected · rpm

  • Red Hat Red Hat Directory Server 12.2 EUS for RHEL 9

    • 9020020240916150035.1674d574 and laternot affected · rpm

  • Red Hat Red Hat Directory Server 12.4 for RHEL 9

    • 9040020240723122852.1674d574 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

    • 0:1.3.11.1-6.el7_9 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8

    • 8100020240910065753.25e700aa and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support

    • 8080020240807050952.6dbb3803 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9

    • 0:2.4.5-9.el9_4 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8389-ds-basebefore 1.4.3.39-8.module_el8.10.0+3891+cbd883bf1.4.3.39-8.module_el8.10.0+3891+cbd883bf
AlmaLinux:8389-ds-base-develbefore 1.4.3.39-8.module_el8.10.0+3891+cbd883bf1.4.3.39-8.module_el8.10.0+3891+cbd883bf
AlmaLinux:8389-ds-base-legacy-toolsbefore 1.4.3.39-8.module_el8.10.0+3891+cbd883bf1.4.3.39-8.module_el8.10.0+3891+cbd883bf
AlmaLinux:8389-ds-base-libsbefore 1.4.3.39-8.module_el8.10.0+3891+cbd883bf1.4.3.39-8.module_el8.10.0+3891+cbd883bf
AlmaLinux:8389-ds-base-snmpbefore 1.4.3.39-8.module_el8.10.0+3891+cbd883bf1.4.3.39-8.module_el8.10.0+3891+cbd883bf
AlmaLinux:8python3-lib389before 1.4.3.39-8.module_el8.10.0+3891+cbd883bf1.4.3.39-8.module_el8.10.0+3891+cbd883bf
AlmaLinux:9389-ds-basebefore 2.4.5-9.el9_42.4.5-9.el9_4
AlmaLinux:9389-ds-base-develbefore 2.4.5-9.el9_42.4.5-9.el9_4
AlmaLinux:9389-ds-base-libsbefore 2.4.5-9.el9_42.4.5-9.el9_4
AlmaLinux:9python3-lib389before 2.4.5-9.el9_42.4.5-9.el9_4
Debian:11389-ds-basebefore 1.4.4.11-2+deb11u11.4.4.11-2+deb11u1
Debian:12389-ds-basebefore 2.3.1+dfsg1-1+deb12u12.3.1+dfsg1-1+deb12u1
Debian:13389-ds-basebefore 3.1.1+dfsg1-13.1.1+dfsg1-1
openSUSE:Tumbleweed389-dsbefore 3.1.1~git0.aef1668-1.13.1.1~git0.aef1668-1.1
Red Hat:directory_server_e4s:11.5::el8389-ds-basebefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-debuginfobefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-debugsourcebefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-develbefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-legacy-toolsbefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-legacy-tools-debuginfobefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-libsbefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-libs-debuginfobefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-snmpbefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde
Red Hat:directory_server_e4s:11.5::el8389-ds-base-snmp-debuginfobefore 0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde0:1.4.3.34-4.module+el8dsrv+22781+5fe99dde

+96

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-11774389-ds-base: 389-ds-base: integer overflow in sasl packet length bypasses size limit leading to heap buffer overflow
    30Monitor
  • CVE-2024-3657389-ds-base: potential denial of service via specially crafted kerberos as-req request
    30Monitor
  • CVE-2025-14905389-ds-base: 389-ds-base: remote code execution and denial of service via heap buffer overflow
    28Monitor
  • CVE-2024-2199389-ds-base: malformed userpassword may cause crash at do_modify in slapd/modify.c
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:389-ds-base2.4.5-9.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:389-ds-base-devel2.4.5-9.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:389-ds-base-legacy-tools1.4.3.39-8.module_el8.10.0+3891+cbd883bf · AlmaLinux:8Package registry (OSV)
almalinux:389-ds-base-libs2.4.5-9.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:389-ds-base-snmp1.4.3.39-8.module_el8.10.0+3891+cbd883bf · AlmaLinux:8Package registry (OSV)
almalinux:python3-lib3892.4.5-9.el9_4 · AlmaLinux:9Package registry (OSV)
debian:389-ds-base2.3.1+dfsg1-1+deb12u1 · Debian:12Package registry (OSV)
opensuse:389-ds2.2.10~git2.345056d3-150600.8.7.2 · openSUSE:Leap 15.6Package registry (OSV)
red hat:389-ds-base0:2.2.4-9.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:389-ds-base-debuginfo0:2.2.4-9.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:389-ds-base-debugsource0:2.2.4-9.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:389-ds-base-devel0:2.4.5-7.module+el9dsrv+22137+7a1133f7 · Red Hat:directory_server:12.4::el9Package registry (OSV)
red hat:389-ds-base-legacy-tools0:1.4.3.35-5.module+el8.8.0+22193+5f98570a · Red Hat:rhel_eus:8.8::appstreamPackage registry (OSV)
red hat:389-ds-base-legacy-tools-debuginfo0:1.4.3.35-5.module+el8.8.0+22193+5f98570a · Red Hat:rhel_eus:8.8::appstreamPackage registry (OSV)
red hat:389-ds-base-libs0:2.2.4-9.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:389-ds-base-libs-debuginfo0:2.2.4-9.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:389-ds-base-snmp0:2.4.5-7.module+el9dsrv+22137+7a1133f7 · Red Hat:directory_server:12.4::el9Package registry (OSV)
red hat:389-ds-base-snmp-debuginfo0:2.2.4-9.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:cockpit-389-ds0:2.4.5-7.module+el9dsrv+22137+7a1133f7 · Red Hat:directory_server:12.4::el9Package registry (OSV)
red hat:python3-lib3890:2.2.4-9.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
rocky linux:389-ds-base0:2.4.5-9.el9_4 · Rocky Linux:9Package registry (OSV)
suse:389-ds2.2.10~git2.345056d3-150600.8.7.2 · SUSE:Linux Enterprise Module for Server Applications 15 SP6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Adjacent
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-1288 · Improper Validation of Consistency within Input

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records