Incorrect Privilege Assignment Affecting ipa-server-common package, versions <0:4.6.8-5.amzn2.17.5


Severity

Recommended
0.0
critical
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-AMZN2-IPASERVERCOMMON-19264262
  • published26 Aug 2026
  • disclosed20 Aug 2026

Introduced: 20 Aug 2026

NewCVE-2026-11861  (opens in a new tab)
CWE-266  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 ipa-server-common to version 0:4.6.8-5.amzn2.17.5 or higher.
This issue was patched in ALAS2-2026-3877.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ipa-server-common package and not the ipa-server-common package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A flaw was found in FreeIPA. When a trust relationship is configured between FreeIPA and Active Directory, Active Directory users can bypass authentication for FreeIPA services, including the portal, SMB server, and LDAP directory. This is possible by impersonating a client name in the Ticket Granting Service (TGS) due to FreeIPA services not verifying Privilege Attribute Certificate (PAC) certificates. This vulnerability could allow an authenticated Active Directory user to escalate their privileges within the FreeIPA domain.

CVSS Base Scores

version 3.1