Secunia Research has discovered boundary errors in the detection of executable packers in libdayzero.dll as loaded by the Filter Hub (filter-hub.exe) of Symantec Mail Security for SMTP. The errors can be exploited to cause unhandled memory access violations causing the filter hub service to crash. Symantec Mail Security for SMTP 5.0 patch 176 is affected. Other versions may also be affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/57343/secunia-symantecsmtp.txt
Source: https://packetstormsecurity.com/files/57343/secunia-symantecsmtp.txt.html