Detections
Analytics

Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : Pillow vulnerabilities (USN-8999-1)

high Nessus Plugin ID 376498

Synopsis

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

Description

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8999-1 advisory.

 It was discovered that Pillow incorrectly handled map stride values when loading certain McIdas AREA images. An attacker could possibly use this issue to obtain sensitive information or cause a denial of service. (CVE-2026-54058)

 It was discovered that Pillow did not properly check for decompression bombs when processing font files.
 An attacker could possibly use this issue to cause Pillow to consume excessive memory, resulting in a denial of service. (CVE-2026-54059, CVE-2026-54060, CVE-2026-55379)

 It was discovered that Pillow did not properly check for decompression bombs when loading GD image files.
 An attacker could possibly use this issue to cause Pillow to consume excessive memory, resulting in a denial of service. (CVE-2026-55380)

 It was discovered that Pillow incorrectly validated filter sizes in the rank filter implementation. An attacker could possibly use this issue to cause Pillow to crash or execute arbitrary code.
 (CVE-2026-59197)

 It was discovered that Pillow incorrectly handled image coordinate calculations. An attacker could possibly use this issue to cause Pillow to crash. (CVE-2026-59199)

 It was discovered that Pillow did not properly limit the size of decompressed PDF stream data. An attacker could possibly use this issue to cause Pillow to consume excessive memory, resulting in a denial of service. (CVE-2026-59200)

 It was discovered that Pillow incorrectly parsed EPS files containing a negative byte count in the BeginBinary directive. An attacker could possibly use this issue to cause Pillow to hang, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-59203)

 It was discovered that Pillow incorrectly accumulated JPEG2000 tile component widths. An attacker could possibly use this issue to cause Pillow to consume excessive memory, resulting in a denial of service.
 (CVE-2026-59204)

 It was discovered that Pillow incorrectly validated image mode compatibility in color management transforms. An attacker could possibly use this issue to cause Pillow to crash or execute arbitrary code.
 (CVE-2026-59205)

Tenable has extracted the preceding description block directly from the Ubuntu 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 python3-pil and / or python3-pil.imagetk packages.

See Also

https://ubuntu.com/security/notices/USN-8999-1

Plugin Details

Severity: High

ID: 376498

File Name: ubuntu_USN-8999-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/5/2026

Updated: 11/5/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 92.99

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-2026-54058

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: 8.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

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

CVSS Score Source: CVE-2026-59204

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3-pil.imagetk, p-cpe:/a:canonical:ubuntu_linux:python3-pil

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/4/2026

Vulnerability Publication Date: 7/6/2026

Reference Information

CVE: CVE-2026-54058, CVE-2026-54059, CVE-2026-54060, CVE-2026-55379, CVE-2026-55380, CVE-2026-59197, CVE-2026-59199, CVE-2026-59200, CVE-2026-59203, CVE-2026-59204, CVE-2026-59205

USN: 8999-1