9.8Critical

CVE-2026-18922389-ds-base: 389-ds-base: sasl plain authentication allows privilege escalation to directory manager via stale identity in cyrus sasl auxiliary property

Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8; Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8; Red Hat Red Hat Directory Server 11.9 for RHEL 8; R… Published: (2 months ago)

Description

A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes that second bind. An attacker can send a SASL PLAIN bind as cn=Directory Manager with an incorrect password, then complete a SASL ANONYMOUS bind on the same connection, causing the server to grant Directory Manager authority without any valid credentials. A variant using a valid low-privileged account's own successful bind instead of an anonymous one is also possible.

Weakness (CWE): CWE-287

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
directory server 11.9 —
directory server e4s 11.5 —
directory server e4s 11.7 —
directory server e4s 12.2 —
directory server e4s 12.4 —
enterprise linux 8 —
enterprise linux 9 —
Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8 all versions
Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8 all versions
Red Hat Red Hat Directory Server 11.9 for RHEL 8 all versions
Red Hat Red Hat Directory Server 12 all versions
Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9 all versions
Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9 all versions
Red Hat Red Hat Directory Server 13 —
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support all versions
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION all versions
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support all versions
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service all versions
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support all versions
rhel aus 8.4 —
rhel aus 8.6 —
rhel e4s 8.8 —
rhel e4s 9.2 —
rhel e4s 9.4 —
rhel eus 9.6 —
rhel eus long life 8.4 —
rhel eus long life 8.6 —
rhel tus 8.8 —

References and patches