Description
LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurred since the last signing and that the signature is valid. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to modify a digitally signed ODF document to insert an additional signing time timestamp which LibreOffice would incorrectly present as a valid signature signed at the bogus signing time. This issue affects: The Document Foundation LibreOffice 7-0 versions prior to 7.0.6; 7-1 versions prior to 7.1.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The Document Foundation | LibreOffice | 7-0 – < 7.0.6, 7-1 – < 7.1.2 | 7.0.6 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libreoffice | 1:7.2.0-2 | — |
| Debian 13 | libreoffice | 1:7.2.0-2 | — |
| Debian 12 | libreoffice | 1:7.2.0-2 | — |
| Debian 11 | libreoffice | 1:7.0.4-4+deb11u1 | DSA-4988-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libreoffice | 1:6.4.7-0ubuntu0.20.04.2 | USN-5153-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | autocorr-af +171 | 1:6.4.7.2-10.el8 | RHSA-2022:1766 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | autocorr-af +170 | 1:6.4.7.2-10.el8.alma | ALSA-2022:1766 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libreoffice | 1:6.4.7.2-10.el8 | RLSA-2022:1766 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libreoffice | 7.2.2.2-r0 | — |
| Alpine v3.23 | libreoffice | 7.2.2.2-r0 | — |
| Alpine v3.22 | libreoffice | 7.2.2.2-r0 | — |
| Alpine v3.21 | libreoffice | 7.2.2.2-r0 | — |
| Alpine v3.20 | libreoffice | 7.2.2.2-r0 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libreoffice | 7.2.2.2-r0 | — |
| Alpine v3.18 | libreoffice | 7.2.2.2-r0 | — |
| Alpine v3.17 | libreoffice | 7.2.2.2-r0 | — |
| Alpine v3.16 | libreoffice | 7.2.2.2-r0 | — |
| Alpine v3.15 | libreoffice | 7.2.2.2-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | autocorr-af +170 | 1:6.4.7.2-10.0.1.el8 | ELSA-2022-1766 |
Advisories 6
- ALSA-2022:1766 Moderate: libreoffice security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:1766 Red Hat Security Advisory: libreoffice security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5153-1 libreoffice vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4988-1 libreoffice - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:1766 Moderate: libreoffice security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- ELSA-2022-1766 Moderate: libreoffice security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022