The standardise function in Anibal Monsalve Salazar sSMTP 2.61 and 2.62 allows local users to cause a denial of service (application exit) via an e-mail message containing a long line that begins with a . (dot) character. NOTE: CVE disputes this issue because it is solely a usability problem for senders of messages with certain long lines, and has no security impact

The from_format function in ssmtp.c in ssmtp 2.61 and 2.62, in certain configurations, uses uninitialized memory for the From: field of an e-mail message, which might allow remote attackers to obtain sensitive information (memory contents) in opportunistic circumstances by reading a message.

The log_event function in ssmtp 2.50.6 and earlier allows local users to overwrite arbitrary files via a symlink attack on the ssmtp.log temporary log file.

Format string vulnerabilities in the (1) die or (2) log_event functions for ssmtp before 2.50.6 allow remote mail relays to cause a denial of service and possibly execute arbitrary code.