Amazon Linux 2 : python-pillow (ALAS-2026-4107)

high Nessus Plugin ID 379829

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of python-pillow installed on the remote host is prior to 2.0.0-23.gitd1c6db8. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-4107 advisory.

A flaw was found in Pillow. When saving an image in the TIFF format, Pillow incorrectly forwards unknown metadata tags to the underlying image processing library. A remote attacker could exploit this flaw by providing a specially crafted image containing malicious metadata to an application that processes and re- saves it. Successful exploitation allows the attacker to read out-of-bounds memory, leading to the disclosure of sensitive process memory or causing the application to crash, resulting in a Denial of Service (DoS). (CVE-2026-112902)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update python-pillow' or or 'yum update --advisory ALAS2-2026-4107' to update your system.

Plugin Details

Severity: High

ID: 379829

File Name: al2_ALAS-2026-4107.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 11/12/2026

Updated: 11/12/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.52

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-112902

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

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

CVSS v4

Risk Factor: High

Base Score: 8.3

Threat Score: 7

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:python-pillow-debuginfo, p-cpe:/a:amazon:linux:python-pillow-devel, p-cpe:/a:amazon:linux:python-pillow-doc, p-cpe:/a:amazon:linux:python-pillow-sane, p-cpe:/a:amazon:linux:python-pillow-tk, p-cpe:/a:amazon:linux:python-pillow

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/12/2026

Vulnerability Publication Date: 10/21/2026

Reference Information

CVE: CVE-2026-112902

Detections

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