Auth bypass in Kopano Groupware Core
CVE-2022-26562
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).
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (81.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Kopano Groupware Core — versions 11.0.2.51
Weakness classification (CWE)
References
- kopano.com/ (Vendor Advisory)
- stash.kopano.io/projects/KC/repos/kopanocore/browse/provider/libserver/ECKrbAut… (Exploit, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2023/03/msg00006.html (mailing-list)
- jira.kopano.io/browse/KC-2021
- github.com/Kopano-dev/kopano-core/blob/master/provider/libserver/ECKrbAuth.cpp
- bugzilla.redhat.com/show_bug.cgi
- bodhi.fedoraproject.org/updates/FEDORA-EPEL-2023-342b96903b
- src.fedoraproject.org/rpms/zarafa/c/a5a8366ccf07f248fae6edffb5123cfda579bfdb
Frequently asked questions
- What is CVE-2022-26562?
- CVE-2022-26562 is a critical-severity vulnerability in Kopano Groupware Core, classified under Improper Authentication. CVSS score: 9.8/10. Published 2022-04-01.
- How severe is CVE-2022-26562?
- Critical severity. CVSS v3 base score is 9.8 out of 10.