Debian dla-4813 : iscsiuio - security update

high Nessus Plugin ID 362657

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4813 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4813-1 [email protected] https://www.debian.org/lts/security/ Daniel Leidert October 02, 2026 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : open-iscsi Version : 2.1.8-1+deb12u1 CVE ID : CVE-2026-18724 CVE-2026-18725 CVE-2026-18726 CVE-2026-18727 CVE-2026-18728 CVE-2026-44943 CVE-2026-44944 Debian Bug : 1143059 1144935

Multiple vulnerabilities were found in open-iscsi, a high-performance, transport independent, multi-platform implementation of RFC3720 iSCSI.

CVE-2026-18724

A stack buffer overflow exists in idbm_recinfo_config.

CVE-2026-18725

An out-of-bounds access exists in the IPv6 ICMPv6 echo handling.

CVE-2026-18726

Multiple vulnerabilities exist in the ICMPv6 Router Advertisement option parsing.

CVE-2026-18727

An integer underflow exists in the iscsiuio DHCPv6 parsing.

CVE-2026-18728

An integer underflow exists in the iscsiuio IPv4 DHCP parsing.

CVE-2026-44943

Improve iscsid discovery handling of IQN names.

CVE-2026-44944

An unprivilidged local user can use the isscsiuio control socket.

For Debian 12 bookworm, these problems have been fixed in version 2.1.8-1+deb12u1.

We recommend that you upgrade your open-iscsi packages.

For the detailed security status of open-iscsi please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/open-iscsi

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
signature.asc Description: This is a digitally signed message part

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the iscsiuio packages.

Plugin Details

Severity: High

ID: 362657

File Name: debian_DLA-4813.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 10/2/2026

Updated: 10/2/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.18

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-44943

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

CVSS Score Source: CVE-2026-18728

CVSS v4

Risk Factor: High

Base Score: 8.5

Threat Score: 5.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-44944

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:12.0, p-cpe:/a:debian:debian_linux:iscsiuio, p-cpe:/a:debian:debian_linux:libopeniscsiusr-dev, p-cpe:/a:debian:debian_linux:libopeniscsiusr, p-cpe:/a:debian:debian_linux:open-iscsi-udeb, p-cpe:/a:debian:debian_linux:open-iscsi

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 10/2/2026

Vulnerability Publication Date: 7/29/2026

Reference Information

CVE: CVE-2026-18724, CVE-2026-18725, CVE-2026-18726, CVE-2026-18727, CVE-2026-18728, CVE-2026-44943, CVE-2026-44944

Detections

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