CVE-2022-26305
Published: 25 July 2022
An Improper Certificate Validation vulnerability in LibreOffice existed where determining if a macro was signed by a trusted author was done by only matching the serial number and issuer string of the used certificate with that of a trusted certificate. This is not sufficient to verify that the macro was actually signed with the certificate. An adversary could therefore create an arbitrary certificate with a serial number and an issuer string identical to a trusted certificate which LibreOffice would present as belonging to the trusted author, potentially leading to the user to execute arbitrary code contained in macros improperly trusted. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.1.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
libreoffice Launchpad, Ubuntu, Debian |
bionic |
Released
(1:6.0.7-0ubuntu0.18.04.12)
|
| focal |
Released
(1:6.4.7-0ubuntu0.20.04.5)
|
|
| jammy |
Not vulnerable
(1:7.3.3-0ubuntu0.22.04.1)
|
|
| kinetic |
Not vulnerable
|
|
| lunar |
Not vulnerable
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Released
(1:7.3.2~rc2-1)
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
Patches: upstream: https://github.com/LibreOffice/core/commit/a7aaa78acea4c1d51283c2fce54ff9f5339026f8 upstream: https://github.com/LibreOffice/core/commit/bae5503ac47ac2faa4c4365f86a00543e43a149a upstream: https://github.com/LibreOffice/core/commit/0ce93b38af84453aba8002c098ac168b0fadfc97 upstream: https://github.com/LibreOffice/core/commit/2c8c221b88f2e2bb5b29a6c1bcce1ea75e98136a |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |