Description
An issue in provider/libserver/ECKrbAuth.cpp of Kopano Core <= v11.0.2.51 contains an issue which allows attackers to authenticate even if the user account or password is expired. It also exists in the predecessor Zarafa Collaboration Platform (ZCP) in provider/libserver/ECPamAuth.cpp of Zarafa >= 6.30 (introduced between 6.30.0 RC1e and 6.30.8 final).
References (8)
Core 8
Core References
Mailing List mailing-list
https://lists.debian.org/debian-lts-announce/2023/03/msg00006.html
Various Sources
https://github.com/Kopano-dev/kopano-core/blob/master/provider/libserver/ECKrbAuth.cpp#L137
Various Sources
https://jira.kopano.io/browse/KC-2021
Various Sources
https://src.fedoraproject.org/rpms/zarafa/c/a5a8366ccf07f248fae6edffb5123cfda579bfdb?branch=epel7
Vendor Advisory
https://kopano.com/
Exploit, Vendor Advisory
https://stash.kopano.io/projects/KC/repos/kopanocore/browse/provider/libserver/ECKrbAuth.cpp#137
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2192126
Scores
CVSS v3
9.8
EPSS
0.0212
EPSS Percentile
79.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-287
Status
published
Products (1)
kopano/groupware_core
11.0.2.51
Published
Apr 01, 2022
Tracked Since
Feb 18, 2026