Courier MTA has fixed a DoS issue related to usernames containing a "=" character.
|Package||mail-mta/courier on all architectures|
|Affected versions||< 0.53.2|
|Unaffected versions||>= 0.53.2|
Courier MTA is an integrated mail and groupware server based on open protocols.
Courier MTA has fixed a security issue relating to usernames containing the "=" character, causing high CPU utilization.
An attacker could exploit this vulnerability by sending a specially crafted email to a mail gateway running a vulnerable version of Courier MTA.
There is no known workaround at this time.
All Courier MTA users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=mail-mta/courier-0.53.2"
August 04, 2006
August 04, 2006: 01