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RockyLinux 8 : 389-ds:1.4 (RLSA-2026:64791)

critical Nessus Plugin ID 344062

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Synopsis

The remote RockyLinux host is missing one or more security updates.

Description

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:64791 advisory.

 * 389-ds-base: 389-ds-base: heap buffer overflow via SASL wrapped-record length lower-bound underflow in sasl_io_start_packet() (CVE-2026-18355)

 * 389-ds-base: 389-ds-base: pre-authentication NULL pointer dereference via paged results and USE_ONE_BACKEND control in op_shared_search (CVE-2026-18453)

 * 389-ds-base: 389-ds-base: SASL PLAIN authentication allows privilege escalation to Directory Manager via stale identity in Cyrus SASL auxiliary property (CVE-2026-18922)

 * 389-ds-base: 389-ds: anonymous LDAP client can defeat SELFDN ACI bind-rule checks via empty bind DN (CVE-2026-76560)

 Bug Fix(es) and Enhancement(s):

 * lib389: set nsDS5ReplicaBindDNGroup before ensure_agreement() [rhel-8.10.z] (JIRA:Rocky Linux-244463)

 * fix breaks replication total init when nsDS5ReplicaBindDNGroup is set after agreement creation [rhel-8.10.z] (JIRA:Rocky Linux-248762)

Tenable has extracted the preceding description block directly from the RockyLinux 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://bugzilla.redhat.com/show_bug.cgi?id=2509186

https://bugzilla.redhat.com/show_bug.cgi?id=2509696

https://bugzilla.redhat.com/show_bug.cgi?id=2511388

https://bugzilla.redhat.com/show_bug.cgi?id=2519521

https://errata.rockylinux.org/RLSA-2026:64791

Plugin Details

Severity: Critical

ID: 344062

File Name: rocky_linux_RLSA-2026-64791.nasl

Version: 1.1

Type: Local

Published: 9/9/2026

Updated: 9/9/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, 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:rocky:linux:8, p-cpe:/a:rocky:linux:389-ds-base-debuginfo, p-cpe:/a:rocky:linux:389-ds-base-debugsource, p-cpe:/a:rocky:linux:389-ds-base-devel, p-cpe:/a:rocky:linux:389-ds-base-legacy-tools-debuginfo, p-cpe:/a:rocky:linux:389-ds-base-legacy-tools, p-cpe:/a:rocky:linux:389-ds-base-libs-debuginfo, p-cpe:/a:rocky:linux:389-ds-base-libs, p-cpe:/a:rocky:linux:389-ds-base-snmp-debuginfo, p-cpe:/a:rocky:linux:389-ds-base-snmp, p-cpe:/a:rocky:linux:389-ds-base, p-cpe:/a:rocky:linux:python3-lib389

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/9/2026

Vulnerability Publication Date: 9/7/2026

Reference Information

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