Clearswift MAILsweeper for SMTP before 4.3.20 and MAILsweeper for Exchange before 4.3.20 allows remote attackers to cause a denial of service via (1) non-ASCII characters in a reverse DNS lookup result from a Received header, which leads to a Receiver service stop, and (2) unspecified vectors involving malformed messages, which causes unpredictable behavior that prevents the Security service from processing more messages.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mailsweeper_for_exchange | Clearswift | * | 4.3.19 (including) |
| Mailsweeper_for_smtp | Clearswift | * | 4.3.19 (including) |
References
- http://download.mimesweeper.com/www/TechnicalDocumentation/ReadMe_MSW_4%2C3%2C20.htm
- http://secunia.com/advisories/20756
- http://www.osvdb.org/26738
- http://www.osvdb.org/26739
- http://www.securityfocus.com/bid/18584
- http://www.vupen.com/english/advisories/2006/2473
- https://exchange.xforce.ibmcloud.com/vulnerabilities/27303
- https://exchange.xforce.ibmcloud.com/vulnerabilities/27305
- http://download.mimesweeper.com/www/TechnicalDocumentation/ReadMe_MSW_4%2C3%2C20.htm
- http://secunia.com/advisories/20756
- http://www.osvdb.org/26738
- http://www.osvdb.org/26739
- http://www.securityfocus.com/bid/18584
- http://www.vupen.com/english/advisories/2006/2473
- https://exchange.xforce.ibmcloud.com/vulnerabilities/27303
- https://exchange.xforce.ibmcloud.com/vulnerabilities/27305