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389-ds-base EUVDEUVD-2026-42052

| CVE-2026-14969 MEDIUM
Generation of Predictable IV with CBC Mode (CWE-329)
2026-07-07 redhat GHSA-9458-4323-hx4r
Information Disclosure Red Hat Directory Server 11 Red Hat Directory Server 12 Red Hat Directory Server 13 Red Hat Enterprise Linux 10 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 9 Red Hat Suse
4.4
CVSS 3.1 · NVD
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Severity by source

Vendor (redhat) PRIMARY
MEDIUM
qualitative
NVD
4.4 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
4.4 MEDIUM

Local filesystem access with high OS privileges required; no integrity or availability impact; confidentiality high given sensitivity of encrypted directory attributes.

3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.0 AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative
Red Hat
4.4 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

1
Analysis Generated
Jul 07, 2026 - 16:20 vuln.today

DescriptionNVD

A flaw was found in 389-ds-base where the LDBM backend attribute encryption uses a hardcoded static initialization vector for AES-CBC and 3DES-CBC operations, allowing an attacker with privileged filesystem access to detect plaintext equality across encrypted entries by comparing ciphertext blocks.

AnalysisAI

Attribute encryption in the 389-ds-base LDBM backend exposes a cryptographic design flaw affecting Red Hat Directory Server 11, 12, and 13 across all supported RHEL releases (6 through 10). The LDBM backend applies a static, hardcoded initialization vector (IV) for both AES-CBC and 3DES-CBC encryption of directory attribute values, meaning that two entries storing identical plaintext for an encrypted attribute will always produce identical ciphertext blocks - a classic ciphertext equality oracle. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Gain root access to RHEL host
Delivery
Locate LDBM database directory
Exploit
Read raw encrypted attribute bytes
Execution
Compare ciphertext blocks across entries
Impact
Identify entries sharing identical encrypted values
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Vulnerability AssessmentAI

Exploitation Exploitation requires the following specific conditions: (1) the attacker must have privileged local filesystem access to the LDBM database directory - consistent with the CVSS AV:L/PR:H vector, this means root-level or equivalent OS access to the host running 389-ds-base; (2) the 389-ds-base instance must be configured with attribute-level encryption enabled on one or more attributes using AES-CBC or 3DES-CBC - this is a non-default configuration that must be explicitly activated by a directory administrator; (3) the target attributes must store values where equality is meaningful (e.g., hashed credentials, unique identifiers, PII fields). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N) scores 4.4 Medium, and the vector is internally consistent with the described attack: local access (AV:L) with high privileges (PR:H) is required to read raw LDBM database files, which are normally restricted to the directory server process and root. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has escalated to root on a RHEL host running Red Hat Directory Server opens the LDBM database files directly (e.g., using a Berkeley DB tool or raw file reads on /var/lib/dirsrv/slapd-instance/db/) and extracts the raw ciphertext bytes for an encrypted attribute such as a personal identifier or credential field across multiple user entries. Because the static IV causes identical plaintext values to encrypt to identical ciphertext, the attacker can group entries by ciphertext equality - for example, confirming which users share the same attribute value - without needing the encryption key or recovering any actual plaintext. …
Remediation No patched package version was explicitly identified in the provided input data; the Red Hat CVE advisory (https://access.redhat.com/security/cve/CVE-2026-14969) and Bugzilla entry (https://bugzilla.redhat.com/show_bug.cgi?id=2497735) should be monitored for errata releases targeting 389-ds-base on the affected RHEL releases. … Detailed patch versions, workarounds, and compensating controls in full report.
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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected
SUSE Linux Enterprise Server 16.0 Affected
SUSE Linux Enterprise Server 16.1 Affected

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EUVD-2026-42052 vulnerability details – vuln.today
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