View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2004-0156 medium priority: Ubuntu including 1 source packages (ssmtp), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1.
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.