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Fencer Vulns
high 7.8

CVE-2023-0950 json

Array Index UnderFlow in Calc Formula Parsing

published 2023-05-25 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12935

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

Improper Validation of Array Index vulnerability in the spreadsheet component of The Document Foundation LibreOffice allows an attacker to craft a spreadsheet document that will cause an array index underflow when loaded. In the affected versions of LibreOffice certain malformed spreadsheet formulas, such as AGGREGATE, could be created with less parameters passed to the formula interpreter than it expected, leading to an array index underflow, in which case there is a risk that arbitrary code could be executed. This issue affects: The Document Foundation LibreOffice 7.4 versions prior to 7.4.6; 7.5 versions prior to 7.5.1.

Patch / fix

  • The Document Foundation LibreOffice 7.4.6, 7.5.1
  • libreoffice Debian 14, Debian 13, Debian 12 4:7.4.5-3

debian advisories DEBIAN-CVE-2023-0950

  • libreoffice Ubuntu 20.04 LTS 1:6.4.7-0ubuntu0.20.04.8
  • libreoffice Ubuntu 22.04 LTS 1:7.3.7-0ubuntu0.22.04.3

ubuntu advisories UBUNTU-CVE-2023-0950

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libreoffice RHEL 8 1:6.4.7.2-15.el8
  • autocorr-af RHEL 8 1:6.4.7.2-15.el8
  • autocorr-bg RHEL 8 1:6.4.7.2-15.el8
  • autocorr-ca RHEL 8 1:6.4.7.2-15.el8
  • autocorr-cs RHEL 8 1:6.4.7.2-15.el8
  • autocorr-da RHEL 8 1:6.4.7.2-15.el8
  • autocorr-de RHEL 8 1:6.4.7.2-15.el8
  • autocorr-en RHEL 8 1:6.4.7.2-15.el8

red hat advisories RHSA-2023:6933RHSA-2023:6508

  • atk SLES 12 SP5, SLES 12 SP4-ESPOS, SLES 12 SP2-BCL +6 more 2.28.1-6.5.23
  • fixmath SLE Workstation Extension 12 SP5 2022.07.20-8.3.48
  • libmwaw SLE Workstation Extension 12 SP5, SLE Software Development Kit 12 SP5 0.3.21-7.24.14
  • xmlsec1 SLES 12 SP5, SLES 12 SP4-ESPOS, SLE Software Development Kit 12 SP5 +5 more 1.2.37-8.6.21
  • dragonbox SLE Workstation Extension 12 SP5 1.1.3-8.3.48
  • libreoffice SLE Workstation Extension 12 SP5, SLE Software Development Kit 12 SP5 7.5.4.1-48.44.2
  • xmlsec1 SLE Workstation Extension 15 SP4, SLE Module for Package Hub 15 SP5, SLE Module for Package Hub 15 SP4 +8 more 1.2.37-150400.14.3.4
  • libreoffice SLE Workstation Extension 15 SP5, SLE Workstation Extension 15 SP4, SLE Module for Package Hub 15 SP5 +3 more 7.5.4.1-150400.17.12.4

suse advisories SUSE-SU-2024:0075-1SUSE-FU-2023:3696-1SUSE-FU-2023:3413-1

  • libreoffice AlmaLinux 8 1:6.4.7.2-15.el8.alma
  • autocorr-af AlmaLinux 8 1:6.4.7.2-15.el8.alma
  • autocorr-bg AlmaLinux 8 1:6.4.7.2-15.el8.alma
  • autocorr-ca AlmaLinux 8 1:6.4.7.2-15.el8.alma
  • autocorr-cs AlmaLinux 8 1:6.4.7.2-15.el8.alma
  • autocorr-da AlmaLinux 8 1:6.4.7.2-15.el8.alma
  • autocorr-de AlmaLinux 8 1:6.4.7.2-15.el8.alma
  • autocorr-en AlmaLinux 8 1:6.4.7.2-15.el8.alma

almalinux advisories ALSA-2023:6933ALSA-2023:6508

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-0950 updated cvss 7.3

libreoffice: Array index underflow in Calc formula parsing

  • Red Hat Enterprise Linux 6 autocorr-af, autocorr-bg, autocorr-ca, autocorr-cs, autocorr-da, autocorr-de, +60 more Red Hat Enterprise Linux 7 autocorr-af, autocorr-bg, autocorr-ca, autocorr-cs, autocorr-da, autocorr-de, +105 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 autocorr-af, autocorr-bg, autocorr-ca, autocorr-cs, autocorr-da, autocorr-de, +101 more
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 8) libreoffice-sdk 6.4.7.2-15.el8
    fixed: vendor fix RHSA-2023:6933
  • Red Hat CodeReady Linux Builder (v. 9) libreoffice-sdk 7.1.8.1-11.el9
    fixed: vendor fix RHSA-2023:6508
  • Red Hat Enterprise Linux AppStream (v. 8) autocorr-af 6.4.7.2-15.el8, autocorr-bg 6.4.7.2-15.el8, autocorr-ca 6.4.7.2-15.el8, autocorr-cs 6.4.7.2-15.el8, autocorr-da 6.4.7.2-15.el8, autocorr-de 6.4.7.2-15.el8, +95 more
    fixed: vendor fix RHSA-2023:6933
  • Red Hat Enterprise Linux AppStream (v. 9) autocorr-af 7.1.8.1-11.el9, autocorr-bg 7.1.8.1-11.el9, autocorr-ca 7.1.8.1-11.el9, autocorr-cs 7.1.8.1-11.el9, autocorr-da 7.1.8.1-11.el9, autocorr-de 7.1.8.1-11.el9, +100 more
    fixed: vendor fix RHSA-2023:6508
  • Red Hat Enterprise Linux 8 autocorr-af, autocorr-bg, autocorr-ca, autocorr-cs, autocorr-da, autocorr-de, +98 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
18 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • The Document Foundation LibreOffice

Classification

Weakness
  • CWE-129 Improper Validation of Array Index

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.