Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-08-24T12:00:00 389-ds-base: 389-ds-base: CVE-2026-11610 incomplete fix may introduce a connection-stall DoS 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CWE-787

A flaw was found in 389-ds-base. A remote, authenticated attacker could exploit a vulnerability in the Simple Authentication and Security Layer (SASL) UNBIND process. By sending a specially crafted request, the attacker can cause a connection to stall, leading to resource exhaustion and a Denial of Service (DoS) for the server.

A flaw was found in 389-ds-base. A remote, authenticated attacker could exploit a vulnerability in the Simple Authentication and Security Layer (SASL) UNBIND process. By sending a specially crafted request, the attacker can cause a connection to stall, leading to resource exhaustion and a Denial of Service (DoS) for the server.

To mitigate this issue, restrict network access to the 389-ds-base service to only trusted clients and networks. This can be achieved by configuring firewall rules to limit inbound connections to the LDAP ports (typically 389 for LDAP and 636 for LDAPS) to known, authorized IP addresses or subnets. Example using `firewalld`: ```bash # firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="<TRUSTED_IP_OR_SUBNET>" port port="389" protocol="tcp" accept' # firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="<TRUSTED_IP_OR_SUBNET>" port port="636" protocol="tcp" accept' # firewall-cmd --reload ``` Replace `<TRUSTED_IP_OR_SUBNET>` with the actual IP addresses or network ranges of your trusted clients. This action may impact legitimate clients if not configured correctly. A service restart is not required for firewall changes to take effect. Red Hat Enterprise Linux 10 2026-09-08T00:00:00Z RHSA-2026:64785 389-ds-base-0:3.2.0-10.el10_2 Red Hat Enterprise Linux 9 2026-09-08T00:00:00Z RHSA-2026:64784 389-ds-base-0:2.8.0-10.el9_8 Red Hat Directory Server 13.2 2026-09-08T00:00:00Z RHSA-2026:65119 dirsrv/dirsrv-container-rhel10:1788851765 Red Hat Directory Server 11 Affected redhat-ds:11/389-ds-base Red Hat Directory Server 12 Affected redhat-ds:12/389-ds-base Red Hat Enterprise Linux 6 Affected 389-ds-base Red Hat Enterprise Linux 7 Affected 389-ds-base Red Hat Enterprise Linux 8 Affected 389-ds:1.4/389-ds-base https://www.cve.org/CVERecord?id=CVE-2026-78701 https://nvd.nist.gov/vuln/detail/CVE-2026-78701