Kerio · Kerio Mailserver · CVE-2003-0487
Name of the Vulnerable Software and Affected Versions:
Kerio MailServer version 5.6.3
Description:
The issue involves multiple buffer overflows and cross-site scripting attacks. Remote authenticated users can cause a denial of service and possibly execute arbitrary code via long parameters in various modules, including `showuser` in the `do subscribe` module, `folder` in the `add acl` and `list` modules, and `user` in the `do map` module. Additionally, cross-site scripting attacks are possible in the `add acl` and `do map` modules of the web mail component, where an attacker can exploit the vulnerability by enticing a victim user to follow a malicious link. The estimated number of potentially affected devices is not specified.
Recommendations:
For Kerio MailServer version 5.6.3, consider disabling the `do subscribe`, `add acl`, `list`, and `do map` modules until a patch is available to prevent exploitation. Restrict access to the web mail component to minimize the risk of cross-site scripting attacks. Avoid using excessive length usernames and parameters in the affected modules to reduce the risk of buffer overflows. At the moment, there is no information about a newer version that contains a fix for this vulnerability.