Detections
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AlmaLinux 9 : 389-ds-base (ALSA-2026:64784)
critical Nessus Plugin ID 344512
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Synopsis
The remote AlmaLinux host is missing one or more security updates.Description
The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:64784 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)
* 389-ds-base: 389-ds-base: CVE-2026-11610 incomplete fix may introduce a connection-stall DoS (CVE-2026-78701)
Bug Fix(es) and Enhancement(s):
* lib389: set nsDS5ReplicaBindDNGroup before ensure_agreement() [almalinux-9.8.z] (JIRA:AlmaLinux-244467)
* fix breaks replication total init when nsDS5ReplicaBindDNGroup is set after agreement creation [almalinux-9.8.z] (JIRA:AlmaLinux-248766)
Tenable has extracted the preceding description block directly from the AlmaLinux 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
Plugin Details
Severity: Critical
ID: 344512
File Name: alma_linux_ALSA-2026-64784.nasl
Version: 1.1
Type: Local
Family: Alma Linux Local Security Checks
Published: 9/10/2026
Updated: 9/10/2026
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:alma:linux:9, cpe:/o:alma:linux:9::appstream, cpe:/o:alma:linux:9::baseos, cpe:/o:alma:linux:9::crb, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::nfv, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9::resilientstorage, cpe:/o:alma:linux:9::sap, cpe:/o:alma:linux:9::sap_hana, cpe:/o:alma:linux:9::supplementary, p-cpe:/a:alma:linux:389-ds-base-devel, p-cpe:/a:alma:linux:389-ds-base-libs, p-cpe:/a:alma:linux:389-ds-base-snmp, p-cpe:/a:alma:linux:389-ds-base, p-cpe:/a:alma:linux:python3-lib389
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 9/8/2026
Vulnerability Publication Date: 7/2/2026
Reference Information
CVE: CVE-2026-18355, CVE-2026-18453, CVE-2026-18922, CVE-2026-76560, CVE-2026-78701