Detections
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Oracle Linux 8 : ELSA-2026-64791-0: / 389-ds:1.4 (ELSA-2026-647910)

critical Nessus Plugin ID 344601

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-647910 advisory.

 - Resolves: RHEL-222326 - EMBARGOED CVE-2026-18453 389-ds:1.4/389-ds-base: 389-ds-base: pre-authentication NULL pointer dereference via paged results and USE_ONE_BACKEND control in op_shared_search [rhel-8.10.z]
 - Resolves: RHEL-220511 - EMBARGOED CVE-2026-18355 389-ds:1.4/389-ds-base: 389-ds-base: heap buffer overflow via SASL wrapped-record length lower-bound underflow in sasl_io_start_packet() [rhel-8.10.z]
 - Resolves: RHEL-232864 - EMBARGOED CVE-2026-18922 389-ds:1.4/389-ds-base: 389-ds-base: SASL PLAIN authentication allows privilege escalation to Directory Manager via stale identity in Cyrus SASL auxiliary property [rhel-8.10.z]
 - Resolves: RHEL-245383 - EMBARGOED CVE-2026-76560 389-ds-base: 389-ds: anonymous LDAP client can defeat SELFDN ACI bind-rule checks via empty bind DN [rhel-8.10.z]
 - Resolves: RHEL-248762 - CVE-2026-11770 fix breaks replication total init when nsDS5ReplicaBindDNGroup is set after agreement creation [rhel-8.10.z]
 - Resolves: RHEL-222326 - EMBARGOED CVE-2026-18453 389-ds:1.4/389-ds-base: 389-ds-base: pre-authentication NULL pointer dereference via paged results and USE_ONE_BACKEND control in op_shared_search [rhel-8.10.z]
 - Resolves: RHEL-220511 - EMBARGOED CVE-2026-18355 389-ds:1.4/389-ds-base: 389-ds-base: heap buffer overflow via SASL wrapped-record length lower-bound underflow in sasl_io_start_packet() [rhel-8.10.z]
 - Resolves: RHEL-232864 - EMBARGOED CVE-2026-18922 389-ds:1.4/389-ds-base: 389-ds-base: SASL PLAIN authentication allows privilege escalation to Directory Manager via stale identity in Cyrus SASL auxiliary property [rhel-8.10.z]
 - Resolves: RHEL-245383 - EMBARGOED CVE-2026-76560 389-ds-base: 389-ds: anonymous LDAP client can defeat SELFDN ACI bind-rule checks via empty bind DN [rhel-8.10.z]
 - Resolves: RHEL-248762 - CVE-2026-11770 fix breaks replication total init when nsDS5ReplicaBindDNGroup is set after agreement creation [rhel-8.10.z]
 - Resolves: RHEL-183073 - EMBARGOED CVE-2026-11770 389-ds-base: 389-ds-base: pre-auth LDAP filter injection in CleanAllRUV status check [rhel-8.10.z]
 - Resolves: RHEL-190782 - CVE-2026-11788 389-ds-base: 389-ds-base: NULL pointer dereference in deref control plugin BER parser [rhel-8.10.z]
 - Resolves: RHEL-210880 - EMBARGOED CVE-2026-15722 389-ds:1.4/389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica ID parsing [rhel-8.10.z]
 - Resolves: RHEL-182162 - EMBARGOED CVE-2026-11610 389-ds-base: 389-ds-base: Heap buffer overflow in sasl_io_recv() via padded SASL UNBIND [rhel-8.10.z]
 - Resolves: RHEL-183102 - CVE-2026-11774 389-ds-base: 389-ds-base: integer overflow in SASL packet length bypasses size limit
 - Resolves: RHEL-178076 - CVE-2026-9064 389-ds:1.4/389-ds-base: unbounded LDAP controls count in get_ldapmessage_controls_ext() causes CPU and heap amplification (remote DoS) [rhel-8.10.z]
 - Resolves: RHEL-137074 - CVE-2025-14905 389-ds:1.4/389-ds-base: 389-ds-base: Remote Code Execution and Denial of Service via heap buffer overflow [rhel-8.10.z]

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-64791-0.html

Plugin Details

Severity: Critical

ID: 344601

File Name: oraclelinux_ELSA-2026-647910.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/10/2026

Updated: 9/10/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.6

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-18922

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:389-ds-base-devel, p-cpe:/a:oracle:linux:389-ds-base-legacy-tools, p-cpe:/a:oracle:linux:389-ds-base-libs, p-cpe:/a:oracle:linux:389-ds-base-snmp, p-cpe:/a:oracle:linux:389-ds-base, p-cpe:/a:oracle:linux:python3-lib389

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 9/10/2026

Vulnerability Publication Date: 9/7/2026

Reference Information

CVE: CVE-2026-18355, CVE-2026-18453, CVE-2026-18922, CVE-2026-76560