Summary
389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.
Security Fix(es):
* 389-ds-base: 389-ds-base: unbounded LDAP controls count in get_ldapmessage_controls_ext() causes CPU and heap amplification (remote DoS) (CVE-2026-9064)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 6
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | 389-ds-base | 1.4.3.39-24.module_el8.10.0+4196+be88fbc7 |
| AlmaLinux · 8 | 389-ds-base-devel | 1.4.3.39-24.module_el8.10.0+4196+be88fbc7 |
| AlmaLinux · 8 | 389-ds-base-legacy-tools | 1.4.3.39-24.module_el8.10.0+4196+be88fbc7 |
| AlmaLinux · 8 | 389-ds-base-libs | 1.4.3.39-24.module_el8.10.0+4196+be88fbc7 |
| AlmaLinux · 8 | 389-ds-base-snmp | 1.4.3.39-24.module_el8.10.0+4196+be88fbc7 |
| AlmaLinux · 8 | python3-lib389 | 1.4.3.39-24.module_el8.10.0+4196+be88fbc7 |
Vulnerabilities 1
-
High 7.5
389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing…