High [CVE-2026-11770] pre-auth LDAP filter injection in CleanAllRUV status check
This high-severity Red Hat Linux advisory covers CVE-2026-11770 affecting Red Hat Directory Server 11.7 E4S for RHEL 8, Red Hat Directory Server 11.9 for RHEL 8, Red Hat Directory Server 12.2 E4S for RHEL 9.
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Summary
A flaw was found in 389 Directory Server. An unauthenticated remote attacker can inject LDAP search filters into the CleanAllRUV replication status-check extended operation.
Because the handler performs the search against cn=config with elevated replication plugin privileges and returns a boolean match result, the attacker can extract sensitive server configuration metadata, including replication bind DNs and password storage scheme information.
Red Hat products with `nsslapd-allow-anonymous-access` enabled by default are particularly susceptible. Red Hat severity: Moderate — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
Weakness: CWE-90.
Affected products named by the advisory: Red Hat Directory Server 11.7 E4S for RHEL 8; Red Hat Directory Server 11.9 for RHEL 8; Red Hat Directory Server 12.2 E4S for RHEL 9; Red Hat Directory Server 12.4 E4S for RHEL 9; and 14 more.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 9 days ago·verify at source
- redhat-ds:11-8080020260806114250.f969626e
- redhat-ds:11-8100020260803140625.37ed7c03
- redhat-ds:12-9020020260730155601.1674d574
- redhat-ds:12-9040020260810131422.1674d574
- 389-ds-base-0:3.2.0-9.el10_2
- 389-ds-base-0:3.0.6-20.el10_0
- 389-ds-base-0:1.3.11.1-14.el7_9
- 389-ds:1.4-8100020260806150504.25e700aa
- 389-ds:1.4-8040020260803141511.96015a92
- 389-ds:1.4-8060020260806120442.824efc52
- 389-ds:1.4-8080020260806114228.6dbb3803
- 389-ds-base-0:2.8.0-9.el9_8
- 389-ds-base-0:2.2.4-20.el9_2
- 389-ds-base-0:2.4.5-27.el9_4
- 389-ds-base-0:2.6.1-23.el9_6
- RHSA-2026:56047
- RHSA-2026:55532
- RHSA-2026:56048
- RHSA-2026:56050
- RHSA-2026:55424
- RHSA-2026:55425
- RHSA-2026:55758
- RHSA-2026:55530
- RHSA-2026:55757
- RHSA-2026:55756
- RHSA-2026:55794
- RHSA-2026:55423
- RHSA-2026:55421
- RHSA-2026:55422
- RHSA-2026:55426
Official advisory · high-confidence parse· fetched 9 days ago·verify at source
Mitigation checklist
- Set nsslapd-allow-anonymous-access to rootdse or off. Restrict LDAP ports to trusted networks. Monitor for extop OID 2.16.840.1.113730.3.6.8. Use strong replication manager passwords.
Official advisory · high-confidence parse· fetched 9 days ago·verify at source
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