WordPress through 4.8.2 uses a weak MD5-based password hashing algorithm,
which makes it easier for attackers to determine cleartext values by
leveraging access to the hash values. NOTE: the approach to changing this
may not be fully compatible with certain use cases, such as migration of a
WordPress site from a web host that uses a recent PHP version to a
different web host that uses PHP 5.2. These use cases are plausible (but
very unlikely) based on statistics showing widespread deployment of
WordPress with obsolete PHP versions.
Upstream:released (4.8.3)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):needed
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.9.5+dfsg1-1)
Ubuntu 18.10 (Cosmic Cuttlefish):not-affected (4.9.7+dfsg1-1)
Ubuntu 19.04 (Disco Dingo):not-affected (4.9.7+dfsg1-1)
More Information

Updated: 2019-01-14 21:14:46 UTC (commit 51f9b73af244ba86b9321e46e526586c25a8e060)