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Directory ServerApplication · Redhat

CVE-2023-1055

MEDIUM · 5.5 CVSS v3.1 Published 2023-02-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A flaw was found in RHDS 11 and RHDS 12. While browsing entries LDAP tries to decode the userPassword attribute instead of the userCertificate attribute which could lead into sensitive information leaked. An attacker with a local account where the cockpit-389-ds is running can list the processes and display the hashed passwords. The highest threat from this vulnerability is to data confidentiality.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A flaw in RHDS 11 and 12 causes LDAP browsing to incorrectly decode the userPassword attribute instead of the userCertificate attribute during entry browsing. A local attacker with an account on the system where cockpit-389-ds runs can list processes and display hashed passwords, leading to data confidentiality breach.

MitigationApply vendor patches for RHDS 11 and 12 to correct the attribute decoding logic. Additionally, restrict local access to the system and implement monitoring for unauthorized process enumeration.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Directory ServerApplication
Affected:= 11.5= 11.6= 12.0= 12.1
FedoraOperating system
Affected:= 36= 37= 38

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if 389-ds or cockpit-389-ds is installed
    Run 'rpm -qa | grep -E "(389-ds|cockpit-389-ds)"' or check package manager for directory server packages
    Affected if The package is installed and the version matches 11.5, 11.6, 12.0, 12.1 for RHDS, or 36, 37, 38 for Fedora
  2. Verify the installed directory server version
    Run 'rpm -q 389-ds-base' or check the version through the package manager
    Affected if The installed version equals 11.5, 11.6, 12.0, or 12.1 for Redhat Directory Server, or 36, 37, 38 for Fedora
  3. Check if cockpit-389-ds service is active
    Run 'systemctl status cockpit-389-ds' or check if the cockpit 389-ds instance is running
    Affected if The cockpit-389-ds service is enabled and running, enabling the LDAP browsing interface
  4. Review LDAP entry browsing behavior
    If accessible, perform an LDAP browse operation and inspect which attribute is decoded when viewing user entries
    Affected if The userPassword attribute is returned/decoded instead of userCertificate when browsing entries

The environment is affected if a vulnerable version of Redhat Directory Server (11.5, 11.6, 12.0, 12.1) or Fedora (36, 37, 38) with cockpit-389-ds is installed and running, allowing a local user to access the LDAP browsing interface.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor patches for RHDS 11 and 12 to correct the attribute decoding logic. Additionally, restrict local access to the system and implement monitoring for unauthorized process enumeration.

Recommended fix Moderate confidence

Red Hat Directory Server 11.5.x/11.6.x/12.0.x/12.1.x to latest available RHDS 11.x or 12.x release containing security fixes

  1. Upgrade Red Hat Directory Server to a version that includes the fix for CVE-2023-1055
  2. Verify the upgrade by reviewing release notes for security fixes addressing userPassword attribute decoding
  3. Test in a non-production environment to confirm the vulnerability is resolved
  4. Deploy the updated version to production
Caveat Review release notes for any configuration or migration changes between versions; test thoroughly before production deployment

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Directory Server Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-1055 in production — separate from our analysis above.

No notes yet

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What this is

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What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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  • No spam, self-promotion, credentials, or personal data