Detections
Analytics
Amazon Linux 2 : spice (ALAS-2026-4030)
high Nessus Plugin ID 371783
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-4030 advisory.A flaw was found in spice-server. Multiple migration data handlers use client-supplied offsets from SPICE_MSGC_MIGRATE_DATA messages without bounds validation, allowing a malicious authenticated SPICE client during VM live migration to read arbitrary heap memory or trigger heap corruption via out-of-bounds read and write operations on the message buffer. (CVE-2026-105958)
A flaw was found in spice-server. The GLZ encoder dictionary restore path truncates a size_t allocation size to int when calling the malloc callback, allowing a malicious authenticated SPICE client during VM live migration to trigger a massive heap buffer overflow by sending a crafted max_encoders value in migration data. (CVE-2026-105959)
Tenable has extracted the preceding description block directly from the tested product 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
Run 'yum update spice' or or 'yum update --advisory ALAS2-2026-4030' to update your system.See Also
https://alas.aws.amazon.com//AL2/ALAS2-2026-4030.html
https://alas.aws.amazon.com/faqs.html
Plugin Details
Severity: High
ID: 371783
File Name: al2_ALAS-2026-4030.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 10/24/2026
Updated: 10/24/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.52
CVSS v2
Risk Factor: High
Base Score: 7.1
Temporal Score: 5.3
Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-105959
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:H/PR:L/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:amazon:linux:2, p-cpe:/a:amazon:linux:spice-debuginfo, p-cpe:/a:amazon:linux:spice-server-devel, p-cpe:/a:amazon:linux:spice-server
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 10/24/2026
Vulnerability Publication Date: 10/16/2026