The ValidateUserLogon function in provider/libserver/ECSession.cpp in Zarafa 5.00 before 7.1.8 beta2 allows remote attackers to cause a denial of service (crash) via vectors related to "a NULL pointer of the username."

The ValidateUserLogon function in provider/libserver/ECSession.cpp in Zarafa 7.1.8, 6.20.0, and earlier, when using certain build conditions, allows remote attackers to cause a denial of service (crash) via vectors related to "a NULL pointer of the password."

WebAccess in Zarafa before 7.1.10 and WebApp before 1.6 stores credentials in cleartext, which allows local Apache users to obtain sensitive information by reading the PHP session files.

Zarafa WebAccess 7.1.10 and WebApp 1.6 beta uses weak permissions (644) for config.php, which allows local users to obtain sensitive information by reading the PHP session files. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-0103.

Zarafa 5.00 uses world-readable permissions for the files in the log directory, which allows local users to obtain sensitive information by reading the log files.

Zarafa WebAccess 4.1 and WebApp uses world-readable permissions for the files in their tmp directory, which allows local users to obtain sensitive information by reading temporary session data.

Zarafa Collaboration Platform 4.1 uses world-readable permissions for /etc/zarafa/license, which allows local users to obtain sensitive information by reading license files.

senddocument.php in Zarafa WebApp before 2.0 beta 3 and WebAccess in Zarafa Collaboration Platform (ZCP) 7.x before 7.1.12 beta 1 and 7.2.x before 7.2.0 beta 1 allows remote attackers to cause a denial of service (/tmp disk consumption) by uploading a large number of files.

provider/server/ECServer.cpp in Zarafa Collaboration Platform (ZCP) before 7.1.13 and 7.2.x before 7.2.1 allows local users to write to arbitrary files via a symlink attack on /tmp/zarafa-upgrade-lock.

zarafa-autorespond in Zarafa Collaboration Platform (ZCP) before 7.2.1 allows local users to gain privileges via a symlink attack on /tmp/zarafa-vacation-*.

Unauthenticated reflected cross-site scripting (XSS) exists in Zarafa Webapp 2.0.1.47791 and earlier. NOTE: this is a discontinued product. The issue was fixed in later Zarafa Webapp versions; however, some former Zarafa Webapp customers use the related Kopano product instead.

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.