Websense Email Security 7.1 before Hotfix 4 allows remote attackers to bypass the sender-based blacklist by using the 8BITMIME EHLO keyword in the SMTP session.
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.
Link | Tags |
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http://www.websense.com/support/article/t-kbarticle/Hotfix-4-for-Websense-Email-Security-v7-1 | vendor advisory |