CVE-2018-14028

NameCVE-2018-14028
DescriptionIn WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
Debian Bugs906565

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
wordpress (PTS)jessie4.1+dfsg-1+deb8u17vulnerable
jessie (security)4.1+dfsg-1+deb8u18vulnerable
stretch4.7.5+dfsg-2+deb9u3vulnerable
stretch (security)4.7.5+dfsg-2+deb9u4vulnerable
buster, sid4.9.8+dfsg1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
wordpresssource(unstable)4.9.8+dfsg1-1906565

Notes

[stretch] - wordpress <no-dsa> (Minor issue)
[jessie] - wordpress <postponed> (can be fixed with a later update)
https://core.trac.wordpress.org/ticket/44710
https://rastating.github.io/unrestricted-file-upload-via-plugin-uploader-in-wordpress/

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