Description
lib/Horde/Mime/Viewer/Ooo.php in Horde Mime_Viewer before 2.2.4 allows XSS via an OpenOffice document, leading to account takeover in Horde Groupware Webmail Edition. This occurs after XSLT rendering.
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 12 | php-horde-mime-viewer | 2.2.4+debian0-1 | — |
| Debian 11 | php-horde-mime-viewer | 2.2.4+debian0-2~deb11u1 | DLA-3924-1 |
| Debian 10 | php-horde-mime-viewer | 2.2.2-3+deb10u1 | DLA-3089-1 |
| Debian 9 | php-horde-mime-viewer | 2.2.1-1+deb9u1 | DLA-3045-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | php-horde-mime-viewer | No fix yet | — |
| Ubuntu 16.04 LTS | php-horde-mime-viewer | No fix yet | — |
Advisories 3
- DLA-3045-1 php-horde-mime-viewer - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3089-1 php-horde-mime-viewer - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3924-1 php-horde-mime-viewer - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://blog.sonarsource.com/horde-webmail-account-takeover-via-email/
- https://github.com/horde/Mime_Viewer/commit/02b46cec1a7e8f1a6835b628850cd56b85963bb5
- [debian-lts-announce] 20220606 [SECURITY] [DLA 3045-1] php-horde-mime-viewer security update mailing-list
- [debian-lts-announce] 20220831 [SECURITY] [DLA 3089-1] php-horde-mime-viewer security update mailing-list