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-2017-9604 medium priority: Ubuntu including 2 source packages (kdepim, kf5-messagelib), 12 status rows across 6 suites (artful, trusty, upstream, xenial, yakkety, zesty): ignored 4, DNE 3, released 3, needed 2.
KDE kmail before 5.5.2 and messagelib before 5.5.2, as distributed in KDE Applications before 17.04.2, do not ensure that a plugin's sign/encrypt action occurs during use of the Send Later feature, which allows remote attackers to obtain sensitive information by sniffing the network.