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

Quick assessment

Affected

Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

389-ds-base是一个高度可用、功能齐全、可靠且安全的 LDAP 服务器实现。它处理世界上许多最大的 LDAP 部署。 389-ds-base ldap server存在安全漏洞，该漏洞源于特制的 LDAP 查询可能会导致目录服务器出现故障，从而导致拒绝服务。

CVSS 7.5 · High EPSS 1.26% · P68 Updated Feb 26, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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I. Basic Information for CVE-2024-3657

Vulnerability Information

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Vulnerability Title

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

Source: CVE Program / CVE List V5

Vulnerability 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

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

输入验证不恰当

Source: CVE Program / CVE List V5

Vulnerability Title

389-ds-base 安全漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE
Red Hat	Red Hat Directory Server 11.5 E4S for RHEL 8	8060020250210084424.0ca98e7e ~ *	`cpe:/a:redhat:directory_server_e4s:11.5::el8`
Red Hat	Red Hat Directory Server 11.7 for RHEL 8	8080020240909040333.f969626e ~ *	`cpe:/a:redhat:directory_server:11.7::el8`
Red Hat	Red Hat Directory Server 11.8 for RHEL 8	8090020240606122459.91529cd0 ~ *	`cpe:/a:redhat:directory_server:11.8::el8`
Red Hat	Red Hat Directory Server 11.9 for RHEL 8	8100020240604161237.37ed7c03 ~ *	`cpe:/a:redhat:directory_server:11.9::el8`
Red Hat	Red Hat Directory Server 12.2 EUS for RHEL 9	9020020240916150035.1674d574 ~ *	`cpe:/a:redhat:directory_server_eus:12.2::el9`
Red Hat	Red Hat Directory Server 12.4 for RHEL 9	9040020240604143706.1674d574 ~ *	`cpe:/a:redhat:directory_server:12.4::el9`
Red Hat	Red Hat Enterprise Linux 7	0:1.3.11.1-5.el7_9 ~ *	`cpe:/o:redhat:enterprise_linux:7::server`
Red Hat	Red Hat Enterprise Linux 8	8100020240613122040.25e700aa ~ *	`cpe:/a:redhat:enterprise_linux:8::appstream`
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	8080020240807050952.6dbb3803 ~ *	`cpe:/a:redhat:rhel_eus:8.8::appstream`
Red Hat	Red Hat Enterprise Linux 9	0:2.4.5-8.el9_4 ~ *	`cpe:/a:redhat:enterprise_linux:9::appstream`
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	0:2.2.4-9.el9_2 ~ *	`cpe:/a:redhat:rhel_eus:9.2::appstream`
Red Hat	Red Hat Enterprise Linux 10	-	`cpe:/o:redhat:enterprise_linux:10`
Red Hat	Red Hat Enterprise Linux 6	-	`cpe:/o:redhat:enterprise_linux:6`

II. Public POCs for CVE-2024-3657

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2024-3657

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Vendor Advisories for CVE-2024-3657 (12)

https://access.redhat.com/security/cve/CVE-2024-3657 vdb-entry x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2274401 issue-tracking x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4633 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:3591 vendor-advisory x_refsource_REDHAT
🔗 RHSA-2024:3837 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
RHSA-2024:4092 - Security Advisory - Red Hat Customer Portal vendor-advisory x_refsource_REDHAT
RHSA-2025:1632 - Security Advisory - Red Hat Customer Portal vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4209 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4235 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:5690 vendor-advisory x_refsource_REDHAT
🔗 RHSA-2024:7458 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4210 vendor-advisory x_refsource_REDHAT

https://www.cve.org/CVERecord?id=CVE-2024-3657

IV. Related Vulnerabilities

Same product: Red Hat Directory Server 11.5 E4S for RHEL 8

Same vendor: Red Hat

Same weakness: CWE-20

V. Comments for CVE-2024-3657

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Goal Reached Thanks to every supporter — we hit 100%!

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

Quick assessment

Possible ATT&CK Techniques 1 AI

I. Basic Information for CVE-2024-3657

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2024-3657

III. Intelligence Information for CVE-2024-3657

Vendor Advisories for CVE-2024-3657 (12)

IV. Related Vulnerabilities

V. Comments for CVE-2024-3657

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