Description
The SwCTBWrapper::Read function in sw/source/filter/ww8/ww8toolbar.cxx in LibreOffice before 5.4.6.1 and 6.x before 6.0.2.1 does not validate a customizations index, which allows remote attackers to cause a denial of service (heap-based buffer overflow with write access) or possibly have unspecified other impact via a crafted document that contains a certain Microsoft Word record.
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 | 1:6.0.2-1 | — |
| Debian 13 | libreoffice | 1:6.0.2-1 | — |
| Debian 12 | libreoffice | 1:6.0.2-1 | — |
| Debian 9 | libreoffice | 1:5.2.7-1+deb9u4 | DSA-4178-1 |
| Debian 8 | libreoffice | 1:4.3.3-2+deb8u11 | DSA-4178-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | libreoffice | 1:3.5.4+dfsg2-0+deb7u11 | DLA-1356-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | libreoffice | 1:5.1.6~rc2-0ubuntu1~xenial6 | USN-3883-1 |
| Ubuntu 14.04 LTS | libreoffice | 1:4.2.8-0ubuntu5.5 | USN-3883-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | autocorr-af +180 | 1:5.3.6.1-19.el7 | RHSA-2018:3054 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | libreoffice | 6.0.4.2-43.33.1 | SUSE-SU-2018:1296-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libreoffice | 7.1.5.2-3.13 | openSUSE-SU-2024:10983-1 |
Advisories 6
- RHSA-2018:3054 Red Hat Security Advisory: libreoffice security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-3883-1 libreoffice vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4178-1 libreoffice - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1356-1 libreoffice - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10983-1 libreoffice-7.1.5.2-3.13 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1296-1 Security update for libreoffice SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://gerrit.libreoffice.org/#/c/49499/
- https://gerrit.libreoffice.org/#/c/49486/
- https://gerrit.libreoffice.org/gitweb?p=core.git%3Ba=commit%3Bh=017fcc2fcd00af17a97bd5463d89662404f57667
- RHSA-2018:3054 vendor-advisory
- DSA-4178 vendor-advisory
- USN-3883-1 vendor-advisory
- [debian-lts-announce] 20180419 [SECURITY] [DLA 1356-1] libreoffice security update mailing-list
- https://www.libreoffice.org/about-us/security/advisories/cve-2018-10120/
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6173
- https://gerrit.libreoffice.org/#/c/49500/