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).
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groupware_core
Vendor: kopano
Actively Exploited
0
CISA KEV List
PoC / Exploits
0
Code Available
Total RCEs
1
Remote Access
Total CVEs
3
Total Indexed
Avg. EPSS
2.12%
Exploit Prob.
Security Vulnerability Index
Page 1 / 1
9.8
CVSS
Severity: CRITICAL
7.5
CVSS
CVE-2021-28994
RCE
kopano-ical (formerly zarafa-ical) in Kopano Groupware Core through 8.7.16, 9.x through 9.1.0, 10.x through 10.0.7, and 11.x through 11.0.1 and Zarafa 6.30.x through 7.2.x allows memory exhaustion via long HTTP headers.
Severity: HIGH
9.8
CVSS
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.
Severity: CRITICAL