sSMTP creates a logfile /tmp/ssmtp.log and the data in this logfile
is user specified. It's possible to overwrite arbitrary files via a symlink attack on the ssmtp.log temporary log file with the permissons of the ssmtp program (normally root).
Classification
Location:
Local Access Required
Attack Type:
Other
Impact:
Loss of Integrity
Exploit:
Exploit Available
Disclosure:
OSVDB Verified
Solution
Currently, there are no known upgrades, patches, or workarounds available to correct this issue.