SUSE SLED15 / SLES15 Security Update : dnsdist (SUSE-SU-2026:1618-1)

high Nessus Plugin ID 310228

Synopsis

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

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1618-1 advisory.

Update to version 1.9.12.

- https://www.dnsdist.org/changelog.html#change-1.9.12

Security issues fixed:

- CVE-2026-0396: crafted DNS queries triggering domain-based dynamic rules can lead to HTML injection in the web dashboard (bsc#1261236).
- CVE-2026-0397: misconfiguration of the CORS policy can lead to information disclosure (bsc#1261237).
- CVE-2026-24028: crafted DNS packet parsed by Lua code using `newDNSPacketOverlay` can lead to an out-of- bounds read (bsc#1261238).
- CVE-2026-24029: disabled option on a DNS over HTTPS nghttp2 frontend allows clients to bypass ACLs and send DoH queries (bsc#1261239).
- CVE-2026-24030: crafted DoQ and DoH3 queries can lead to unbounded memory allocation and DoS (bsc#1261240).
- CVE-2026-27853: crafted DNS responses sent to a DNSdist using certain methods in custom Lua code (`changeName`) can lead to an out-of-bounds write (bsc#1261243).
- CVE-2026-27854: crafted DNS queries sent to a DNSdist using the `DNSQuestion:getEDNSOptions` method in custom Lua code can lead to a use-after-free (bsc#1261241).

Tenable has extracted the preceding description block directly from the SUSE 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 dnsdist package.

Plugin Details

Severity: High

ID: 310228

File Name: suse_SU-2026-1618-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 4/25/2026

Updated: 4/25/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2026-24028

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:dnsdist

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/24/2026

Vulnerability Publication Date: 3/31/2026

Reference Information

CVE: CVE-2026-0396, CVE-2026-0397, CVE-2026-24028, CVE-2026-24029, CVE-2026-24030, CVE-2026-27853, CVE-2026-27854

SuSE: SUSE-SU-2026:1618-1

Detections

Analytics