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Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : ImageMagick vulnerabilities (USN-8468-1)

high Nessus Plugin ID 322789

Synopsis

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

Description

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8468-1 advisory.

 It was discovered that ImageMagick incorrectly handled certain images when using the wavelet-denoise operator. An attacker could possibly use this issue to trigger a heap buffer over-read, resulting in information disclosure. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-27798)

 It was discovered that ImageMagick incorrectly handled certain DJVU images. An attacker could possibly use this issue to trigger a heap buffer over-read, resulting in information disclosure. (CVE-2026-27799)

 It was discovered that ImageMagick incorrectly handled certain MNG images. An attacker could possibly use this issue to trigger a stack buffer overflow, resulting in arbitrary code execution. (CVE-2026-28690)

 It was discovered that ImageMagick incorrectly handled certain JBIG images. An attacker could possibly use this issue to trigger a pointer dereference error, resulting in a denial of service. (CVE-2026-28691)

 It was discovered that ImageMagick incorrectly handled certain MAT images. An attacker could possibly use this issue to trigger a heap buffer over-read, resulting in information disclosure. (CVE-2026-28692)

 It was discovered that ImageMagick incorrectly handled certain DIB images. An attacker could possibly use this issue to trigger an integer overflow, resulting in arbitrary code execution. (CVE-2026-28693)

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 packages.

See Also

https://ubuntu.com/security/notices/USN-8468-1

Plugin Details

Severity: High

ID: 322789

File Name: ubuntu_USN-8468-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/25/2026

Updated: 6/25/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-27798

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16-8, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-dev, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:imagemagick, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16hdri-3, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-6, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16hdri-6, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16-dev, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16-9t64, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-3-extra, p-cpe:/a:canonical:ubuntu_linux:imagemagick-common, p-cpe:/a:canonical:ubuntu_linux:imagemagick-6-common, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6-headers, p-cpe:/a:canonical:ubuntu_linux:libimage-magick-perl, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6-headers, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16-5v5, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16hdri-7t64, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6-arch-config, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16hdri-7, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16hdri-dev, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16-dev, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:imagemagick-6.q16hdri, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16-7, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-7-extra, p-cpe:/a:canonical:ubuntu_linux:libmagickcore5, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16-2, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-dev, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-3, p-cpe:/a:canonical:ubuntu_linux:libimage-magick-q16hdri-perl, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-6-extra, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-7t64, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16-7t64, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-dev, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-2-extra, p-cpe:/a:canonical:ubuntu_linux:perlmagick, p-cpe:/a:canonical:ubuntu_linux:libimage-magick-q16-perl, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b5, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-dev, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-7t64, p-cpe:/a:canonical:ubuntu_linux:libmagickwand5, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16hdri-8, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16-3, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-dev, p-cpe:/a:canonical:ubuntu_linux:imagemagick-6.q16, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16-6, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-3, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-7-extra, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-6, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6-headers, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16hdri-3-extra, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-2, p-cpe:/a:canonical:ubuntu_linux:libmagickcore5-extra, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libmagickwand-6.q16hdri-dev, p-cpe:/a:canonical:ubuntu_linux:libmagickcore-6.q16-6-extra, p-cpe:/a:canonical:ubuntu_linux:libmagick%2b%2b-6.q16hdri-9t64, cpe:/o:canonical:ubuntu_linux:22.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/24/2026

Vulnerability Publication Date: 2/25/2026

Reference Information

CVE: CVE-2026-27798, CVE-2026-27799, CVE-2026-28690, CVE-2026-28691, CVE-2026-28692, CVE-2026-28693

IAVB: 2026-B-0067-S

USN: 8468-1