CVE-2020-4047

NameCVE-2020-4047
DescriptionIn affected versions of WordPress, authenticated users with upload permissions (like authors) are able to inject JavaScript into some media file attachment pages in a certain way. This can lead to script execution in the context of a higher privileged user when the file is viewed by them. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).
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)
ReferencesDLA-2269-1, DLA-2371-1, DSA-4709-1
NVD severitylow
Debian Bugs962685

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
wordpress (PTS)stretch4.7.5+dfsg-2+deb9u6vulnerable
stretch (security)4.7.18+dfsg-1+deb9u1fixed
buster, buster (security)5.0.10+dfsg1-0+deb10u1fixed
bullseye, sid5.5.1+dfsg1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
wordpresssourcejessie4.1.31+dfsg-0+deb8u1DLA-2269-1
wordpresssourcestretch4.7.18+dfsg-1+deb9u1DLA-2371-1
wordpresssourcebuster5.0.10+dfsg1-0+deb10u1DSA-4709-1
wordpresssource(unstable)5.4.2+dfsg1-1962685

Notes

https://core.trac.wordpress.org/changeset/47948
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-8q2w-5m27-wm27
https://github.com/WordPress/wordpress-develop/commit/0977c0d6b241479ecedfe19e96be69f727c3f81f

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