Riskcovery

CVE-2026-18922

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

State
Published
Severity
9.8 Critical
Published
Sep 7, 2026
Updated
Oct 8, 2026
Reserved
Aug 5, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hredhat

Weaknesses

Affected Products

ProductVersions
Red Hat Directory Server 11.5 E4S for RHEL 8Red Hat
  • 8060020260908152739.0ca98e7e and laterNot affected
Red Hat Directory Server 11.7 E4S for RHEL 8Red Hat
  • 8080020260903102346.f969626e and laterNot affected
Red Hat Directory Server 11.9 for RHEL 8Red Hat
  • 8100020260904171440.37ed7c03 and laterNot affected
Red Hat Directory Server 12.2 E4S for RHEL 9Red Hat
  • 9020020260903155914.1674d574 and laterNot affected
Red Hat Directory Server 12.4 E4S for RHEL 9Red Hat
  • 9040020260903102623.1674d574 and laterNot affected
Red Hat Enterprise Linux 10Red Hat
  • 0:3.2.0-10.el10_2 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat
  • 0:3.0.6-21.el10_0 and laterNot affected
Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONRed Hat
  • 0:1.2.11.15-97.el6_10.1 and laterNot affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat
  • 0:1.3.11.1-15.el7_9 and laterNot affected
Red Hat Enterprise Linux 8Red Hat
  • 8100020260904155442.25e700aa and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat
  • 8040020260901171549.96015a92 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat
  • 8040020260901171549.96015a92 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat
  • 8060020260901145727.824efc52 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat
  • 8060020260901145727.824efc52 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat
  • 8080020260831180218.6dbb3803 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat
  • 8080020260831180218.6dbb3803 and laterNot affected
Red Hat Enterprise Linux 9Red Hat
  • 0:2.8.0-10.el9_8 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat
  • 0:2.2.4-22.el9_2 and laterNot affected
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat
  • 0:2.4.5-29.el9_4 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat
  • 0:2.6.1-24.el9_6 and laterNot affected
Red Hat Directory Server 12Red Hat
    Red Hat Directory Server 13Red Hat

      References

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