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    CVE-2024-3657

    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

    Published:May 28, 2024
    Last Modified:Apr 15, 2026
    EPS:May 28, 2024
    EPSS Score:0.00549
    CVSS Score:7.5

    Affected Products

    Vendor
    Redhat
    Product
    Directory Server
    Vendor
    Redhat
    Product
    Directory Server E4s
    Vendor
    Redhat
    Product
    Directory Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-20 Improper Input Validation

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

    CVE-2026-18922 (CVSS 9.8) — A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyru…
    CVE-2026-19843 (CVSS 8.4) — A flaw was found in 389-ds-base. The Cockpit 389 Console's LDAP editor constructs an ldapsearch command by emb…
    CVE-2026-76560 (CVSS 7.5) — A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule evaluator incorrectly matches an anonymous …
    CVE-2026-18453 (CVSS 7.5) — A flaw was found in 389 Directory Server. A missing NULL pointer check in the paged results handling of op_sha…
    CVE-2026-18355 (CVSS 7.5) — A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasl_io_…
    CVE-2026-78701 (CVSS 6.5) — A flaw was found in 389-ds-base. A remote, authenticated attacker could exploit a vulnerability in the Simple …
    CVE-2026-18663 (CVSS 5.9) — A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function frees the parsed controls array o…
    CVE-2026-19404 (CVSS 6.5) — A flaw was found in 389 Directory Server. The CleanAllRUV and Abort CleanAllRUV replication-maintenance extend…
    CVE-2026-18651 (CVSS 5.4) — A flaw was found in 389 Directory Server. During SASL PLAIN authentication, the server installs connection-lev…
    CVE-2026-11770 (CVSS 7.5) — A flaw was found in 389 Directory Server. An unauthenticated remote attacker can inject LDAP search filters in…

    References

    https://access.redhat.com/errata/RHSA-2024:3591
    https://access.redhat.com/errata/RHSA-2024:3837
    https://access.redhat.com/errata/RHSA-2024:4092
    https://access.redhat.com/errata/RHSA-2024:4209
    https://access.redhat.com/errata/RHSA-2024:4210
    https://access.redhat.com/errata/RHSA-2024:4235
    https://access.redhat.com/errata/RHSA-2024:4633
    https://access.redhat.com/errata/RHSA-2024:5690
    https://access.redhat.com/errata/RHSA-2024:6576
    https://access.redhat.com/errata/RHSA-2024:7458
    https://access.redhat.com/errata/RHSA-2025:1632
    https://access.redhat.com/security/cve/CVE-2024-3657
    https://bugzilla.redhat.com/show_bug.cgi?id=2274401
    https://access.redhat.com/errata/RHSA-2024:3591
    https://access.redhat.com/errata/RHSA-2024:3837
    https://access.redhat.com/errata/RHSA-2024:4092
    https://access.redhat.com/errata/RHSA-2024:4209
    https://access.redhat.com/errata/RHSA-2024:4210
    https://access.redhat.com/errata/RHSA-2024:4235
    https://access.redhat.com/errata/RHSA-2024:4633
    https://access.redhat.com/security/cve/CVE-2024-3657
    https://bugzilla.redhat.com/show_bug.cgi?id=2274401
    https://lists.debian.org/debian-lts-announce/2025/01/msg00015.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High