CVE-2024-3657: 389-ds-base: potential denial of service via specially crafted kerberos as-req request

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-28 · updated 2026-06-17
Weakness: CWE-20

Description

A flaw was found in 389-ds-base. A specially-crafted LDAP query can potentially cause a failure on the directory server, leading to a denial of service

Affected products

Red Hat Directory Server 11.5 E4S for RHEL 8: all versions — fixed in 8060020250210084424.0ca98e7e
Red Hat Directory Server 11.7 for RHEL 8: all versions — fixed in 8080020240909040333.f969626e
Red Hat Directory Server 11.8 for RHEL 8: all versions — fixed in 8090020240606122459.91529cd0
Red Hat Directory Server 11.9 for RHEL 8: all versions — fixed in 8100020240604161237.37ed7c03
Red Hat Directory Server 12.2 EUS for RHEL 9: all versions — fixed in 9020020240916150035.1674d574
Red Hat Directory Server 12.4 for RHEL 9: all versions — fixed in 9040020240604143706.1674d574
Red Hat Enterprise Linux 7: all versions — fixed in 0:1.3.11.1-5.el7_9
Red Hat Enterprise Linux 8: all versions — fixed in 8100020240613122040.25e700aa
Red Hat Enterprise Linux 8.8 Extended Update Support: all versions — fixed in 8080020240807050952.6dbb3803
Red Hat Enterprise Linux 9: all versions — fixed in 0:2.4.5-8.el9_4
Red Hat Enterprise Linux 9.2 Extended Update Support: all versions — fixed in 0:2.2.4-9.el9_2

How to fix

Upgrade to a fixed version: Red Hat Directory Server 11.5 E4S for RHEL 8 8060020250210084424.0ca98e7e; Red Hat Directory Server 11.7 for RHEL 8 8080020240909040333.f969626e; Red Hat Directory Server 11.8 for RHEL 8 8090020240606122459.91529cd0; Red Hat Directory Server 11.9 for RHEL 8 8100020240604161237.37ed7c03; Red Hat Directory Server 12.2 EUS for RHEL 9 9020020240916150035.1674d574; Red Hat Directory Server 12.4 for RHEL 9 9040020240604143706.1674d574; Red Hat Enterprise Linux 7 0:1.3.11.1-5.el7_9; Red Hat Enterprise Linux 8 8100020240613122040.25e700aa; Red Hat Enterprise Linux 8.8 Extended Update Support 8080020240807050952.6dbb3803; Red Hat Enterprise Linux 9 0:2.4.5-8.el9_4; Red Hat Enterprise Linux 9.2 Extended Update Support 0:2.2.4-9.el9_2. Check the vendor advisory for mitigations.

References

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