Description
HrAddFBBlock in libfreebusy/freebusyutil.cpp in Kopano Groupware Core before 8.7.7 allows out-of-bounds access, as demonstrated by mishandling of an array copy during parsing of ICal data.
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 10 | kopanocore | 8.7.0-3+deb10u1 | DLA-3354-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | kopanocore | 8.7.0-7.1ubuntu10.1 | USN-6876-1 |
| Ubuntu 20.04 LTS | kopanocore | 8.7.0-7ubuntu1.1 | USN-6876-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | kopanocore | 8.5.5-0ubuntu1+esm1 | USN-6876-1 |
Advisories 2
- USN-6876-1 kopanocore vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-3354-1 kopanocore - security update Debian Security (DSA / DLA) · Mar 9, 2026