Amazon Linux 2 : libreoffice (ALASLIBREOFFICE-2026-010)

medium Nessus Plugin ID 365272

Synopsis

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

Description

The version of libreoffice installed on the remote host is prior to 5.3.6.1-21. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2LIBREOFFICE-2026-010 advisory.

LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing an encrypted document. The length of the decryption key was taken from the document's own encryption dictionary and was used to fill a fixed size key buffer without being checked against it, so a length larger than that buffer wrote past its end. In fixed versions a declared key length larger than the buffer is rejected.
(CVE-2026-63273)

LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the array can hold wrote past its end. In fixed versions the hint count is checked against the capacity the array really has. (CVE-2026-63275)

LibreOffice converts CFF fonts to Type 1 when it subsets a font, which happens when a document is exported to PDF, and CFF fonts may be embedded in documents. A stack buffer overflow existed in that conversion.
The converted operators were written into a fixed size buffer with no check that they still fit, so a glyph emitting many operators wrote past the end of the buffer. In fixed versions the remaining capacity is tracked and the conversion stops when it is used up. (CVE-2026-63276)

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 libreoffice' or or 'yum update --advisory ALAS2LIBREOFFICE-2026-010' to update your system.

Plugin Details

Severity: Medium

ID: 365272

File Name: al2_ALASLIBREOFFICE-2026-010.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 10/12/2026

Updated: 10/13/2026

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: 58.32

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-63276

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 7.3

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 5.4

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:autocorr-af, p-cpe:/a:amazon:linux:autocorr-bg, p-cpe:/a:amazon:linux:autocorr-ca, p-cpe:/a:amazon:linux:autocorr-cs, p-cpe:/a:amazon:linux:autocorr-da, p-cpe:/a:amazon:linux:autocorr-de, p-cpe:/a:amazon:linux:autocorr-en, p-cpe:/a:amazon:linux:autocorr-es, p-cpe:/a:amazon:linux:autocorr-fa, p-cpe:/a:amazon:linux:autocorr-fi, p-cpe:/a:amazon:linux:autocorr-fr, p-cpe:/a:amazon:linux:autocorr-ga, p-cpe:/a:amazon:linux:autocorr-hr, p-cpe:/a:amazon:linux:autocorr-hu, p-cpe:/a:amazon:linux:autocorr-is, p-cpe:/a:amazon:linux:autocorr-it, p-cpe:/a:amazon:linux:autocorr-ja, p-cpe:/a:amazon:linux:autocorr-ko, p-cpe:/a:amazon:linux:autocorr-lb, p-cpe:/a:amazon:linux:autocorr-lt, p-cpe:/a:amazon:linux:autocorr-mn, p-cpe:/a:amazon:linux:autocorr-nl, p-cpe:/a:amazon:linux:autocorr-pl, p-cpe:/a:amazon:linux:autocorr-pt, p-cpe:/a:amazon:linux:autocorr-ro, p-cpe:/a:amazon:linux:autocorr-ru, p-cpe:/a:amazon:linux:autocorr-sk, p-cpe:/a:amazon:linux:autocorr-sl, p-cpe:/a:amazon:linux:autocorr-sr, p-cpe:/a:amazon:linux:autocorr-sv, p-cpe:/a:amazon:linux:autocorr-tr, p-cpe:/a:amazon:linux:autocorr-vi, p-cpe:/a:amazon:linux:autocorr-zh, p-cpe:/a:amazon:linux:libreoffice-base, p-cpe:/a:amazon:linux:libreoffice-bsh, p-cpe:/a:amazon:linux:libreoffice-calc, p-cpe:/a:amazon:linux:libreoffice-core, p-cpe:/a:amazon:linux:libreoffice-data, p-cpe:/a:amazon:linux:libreoffice-debuginfo, p-cpe:/a:amazon:linux:libreoffice-draw, p-cpe:/a:amazon:linux:libreoffice-emailmerge, p-cpe:/a:amazon:linux:libreoffice-filters, p-cpe:/a:amazon:linux:libreoffice-gdb-debug-support, p-cpe:/a:amazon:linux:libreoffice-glade, p-cpe:/a:amazon:linux:libreoffice-graphicfilter, p-cpe:/a:amazon:linux:libreoffice-gtk2, p-cpe:/a:amazon:linux:libreoffice-gtk3, p-cpe:/a:amazon:linux:libreoffice-help-ar, p-cpe:/a:amazon:linux:libreoffice-help-bg, p-cpe:/a:amazon:linux:libreoffice-help-bn, p-cpe:/a:amazon:linux:libreoffice-help-ca, p-cpe:/a:amazon:linux:libreoffice-help-cs, p-cpe:/a:amazon:linux:libreoffice-help-da, p-cpe:/a:amazon:linux:libreoffice-help-de, p-cpe:/a:amazon:linux:libreoffice-help-dz, p-cpe:/a:amazon:linux:libreoffice-help-el, p-cpe:/a:amazon:linux:libreoffice-help-es, p-cpe:/a:amazon:linux:libreoffice-help-et, p-cpe:/a:amazon:linux:libreoffice-help-eu, p-cpe:/a:amazon:linux:libreoffice-help-fr, p-cpe:/a:amazon:linux:libreoffice-help-gl, p-cpe:/a:amazon:linux:libreoffice-help-gu, p-cpe:/a:amazon:linux:libreoffice-help-hi, p-cpe:/a:amazon:linux:libreoffice-help-hr, p-cpe:/a:amazon:linux:libreoffice-help-hu, p-cpe:/a:amazon:linux:libreoffice-help-id, p-cpe:/a:amazon:linux:libreoffice-help-it, p-cpe:/a:amazon:linux:libreoffice-help-ja, p-cpe:/a:amazon:linux:libreoffice-help-ko, p-cpe:/a:amazon:linux:libreoffice-help-lt, p-cpe:/a:amazon:linux:libreoffice-help-lv, p-cpe:/a:amazon:linux:libreoffice-help-nb, p-cpe:/a:amazon:linux:libreoffice-help-nl, p-cpe:/a:amazon:linux:libreoffice-help-nn, p-cpe:/a:amazon:linux:libreoffice-help-pl, p-cpe:/a:amazon:linux:libreoffice-help-pt-br, p-cpe:/a:amazon:linux:libreoffice-help-pt-pt, p-cpe:/a:amazon:linux:libreoffice-help-ro, p-cpe:/a:amazon:linux:libreoffice-help-ru, p-cpe:/a:amazon:linux:libreoffice-help-si, p-cpe:/a:amazon:linux:libreoffice-help-sk, p-cpe:/a:amazon:linux:libreoffice-help-sl, p-cpe:/a:amazon:linux:libreoffice-help-sv, p-cpe:/a:amazon:linux:libreoffice-help-ta, p-cpe:/a:amazon:linux:libreoffice-help-tr, p-cpe:/a:amazon:linux:libreoffice-help-uk, p-cpe:/a:amazon:linux:libreoffice-help-zh-hans, p-cpe:/a:amazon:linux:libreoffice-help-zh-hant, p-cpe:/a:amazon:linux:libreoffice-impress, p-cpe:/a:amazon:linux:libreoffice-langpack-af, p-cpe:/a:amazon:linux:libreoffice-langpack-ar, p-cpe:/a:amazon:linux:libreoffice-langpack-as, p-cpe:/a:amazon:linux:libreoffice-langpack-bg, p-cpe:/a:amazon:linux:libreoffice-langpack-bn, p-cpe:/a:amazon:linux:libreoffice-langpack-br, p-cpe:/a:amazon:linux:libreoffice-langpack-ca, p-cpe:/a:amazon:linux:libreoffice-langpack-cs, p-cpe:/a:amazon:linux:libreoffice-langpack-cy, p-cpe:/a:amazon:linux:libreoffice-langpack-da, p-cpe:/a:amazon:linux:libreoffice-langpack-de, p-cpe:/a:amazon:linux:libreoffice-langpack-dz, p-cpe:/a:amazon:linux:libreoffice-langpack-el, p-cpe:/a:amazon:linux:libreoffice-langpack-en, p-cpe:/a:amazon:linux:libreoffice-langpack-es, p-cpe:/a:amazon:linux:libreoffice-langpack-et, p-cpe:/a:amazon:linux:libreoffice-langpack-eu, p-cpe:/a:amazon:linux:libreoffice-langpack-fa, p-cpe:/a:amazon:linux:libreoffice-langpack-fr, p-cpe:/a:amazon:linux:libreoffice-langpack-ga, p-cpe:/a:amazon:linux:libreoffice-langpack-gl, p-cpe:/a:amazon:linux:libreoffice-langpack-gu, p-cpe:/a:amazon:linux:libreoffice-langpack-hi, p-cpe:/a:amazon:linux:libreoffice-langpack-hr, p-cpe:/a:amazon:linux:libreoffice-langpack-hu, p-cpe:/a:amazon:linux:libreoffice-langpack-id, p-cpe:/a:amazon:linux:libreoffice-langpack-it, p-cpe:/a:amazon:linux:libreoffice-langpack-ja, p-cpe:/a:amazon:linux:libreoffice-langpack-kk, p-cpe:/a:amazon:linux:libreoffice-langpack-kn, p-cpe:/a:amazon:linux:libreoffice-langpack-ko, p-cpe:/a:amazon:linux:libreoffice-langpack-lt, p-cpe:/a:amazon:linux:libreoffice-langpack-lv, p-cpe:/a:amazon:linux:libreoffice-langpack-mai, p-cpe:/a:amazon:linux:libreoffice-langpack-ml, p-cpe:/a:amazon:linux:libreoffice-langpack-mr, p-cpe:/a:amazon:linux:libreoffice-langpack-nb, p-cpe:/a:amazon:linux:libreoffice-langpack-nl, p-cpe:/a:amazon:linux:libreoffice-langpack-nn, p-cpe:/a:amazon:linux:libreoffice-langpack-nr, p-cpe:/a:amazon:linux:libreoffice-langpack-nso, p-cpe:/a:amazon:linux:libreoffice-langpack-or, p-cpe:/a:amazon:linux:libreoffice-langpack-pa, p-cpe:/a:amazon:linux:libreoffice-langpack-pl, p-cpe:/a:amazon:linux:libreoffice-langpack-pt-br, p-cpe:/a:amazon:linux:libreoffice-langpack-pt-pt, p-cpe:/a:amazon:linux:libreoffice-langpack-ro, p-cpe:/a:amazon:linux:libreoffice-langpack-ru, p-cpe:/a:amazon:linux:libreoffice-langpack-si, p-cpe:/a:amazon:linux:libreoffice-langpack-sk, p-cpe:/a:amazon:linux:libreoffice-langpack-sl, p-cpe:/a:amazon:linux:libreoffice-langpack-sr, p-cpe:/a:amazon:linux:libreoffice-langpack-ss, p-cpe:/a:amazon:linux:libreoffice-langpack-st, p-cpe:/a:amazon:linux:libreoffice-langpack-sv, p-cpe:/a:amazon:linux:libreoffice-langpack-ta, p-cpe:/a:amazon:linux:libreoffice-langpack-te, p-cpe:/a:amazon:linux:libreoffice-langpack-th, p-cpe:/a:amazon:linux:libreoffice-langpack-tn, p-cpe:/a:amazon:linux:libreoffice-langpack-tr, p-cpe:/a:amazon:linux:libreoffice-langpack-ts, p-cpe:/a:amazon:linux:libreoffice-langpack-uk, p-cpe:/a:amazon:linux:libreoffice-langpack-ve, p-cpe:/a:amazon:linux:libreoffice-langpack-xh, p-cpe:/a:amazon:linux:libreoffice-langpack-zh-hans, p-cpe:/a:amazon:linux:libreoffice-langpack-zh-hant, p-cpe:/a:amazon:linux:libreoffice-langpack-zu, p-cpe:/a:amazon:linux:libreoffice-librelogo, p-cpe:/a:amazon:linux:libreoffice-math, p-cpe:/a:amazon:linux:libreoffice-nlpsolver, p-cpe:/a:amazon:linux:libreoffice-officebean-common, p-cpe:/a:amazon:linux:libreoffice-officebean, p-cpe:/a:amazon:linux:libreoffice-ogltrans, p-cpe:/a:amazon:linux:libreoffice-opensymbol-fonts, p-cpe:/a:amazon:linux:libreoffice-pdfimport, p-cpe:/a:amazon:linux:libreoffice-postgresql, p-cpe:/a:amazon:linux:libreoffice-pyuno, p-cpe:/a:amazon:linux:libreoffice-rhino, p-cpe:/a:amazon:linux:libreoffice-sdk-doc, p-cpe:/a:amazon:linux:libreoffice-sdk, p-cpe:/a:amazon:linux:libreoffice-ure-common, p-cpe:/a:amazon:linux:libreoffice-ure, p-cpe:/a:amazon:linux:libreoffice-wiki-publisher, p-cpe:/a:amazon:linux:libreoffice-writer, p-cpe:/a:amazon:linux:libreoffice-x11, p-cpe:/a:amazon:linux:libreoffice-xsltfilter, p-cpe:/a:amazon:linux:libreoffice, p-cpe:/a:amazon:linux:libreofficekit-devel, p-cpe:/a:amazon:linux:libreofficekit

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/12/2026

Vulnerability Publication Date: 9/22/2026

Reference Information

CVE: CVE-2026-63273, CVE-2026-63275, CVE-2026-63276

IAVB: 2026-B-0272-S

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