Description
An Improper Certificate Validation vulnerability in LibreOffice allowed
an attacker to self sign an ODF document, with a signature untrusted by
the target, then modify it to change the signature algorithm to an
invalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a
valid signature issued by a trusted person
This issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The Document Foundation | LibreOffice | 7.0 – < 7.0.5, 7.1 – < 7.1.1 | 7.0.5 |
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.
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 4
- 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
- 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