CVE-2020-8866

Name	CVE-2020-8866
Description	This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2162-1
Debian Bugs	955020

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
php-horde-form (PTS)	buster	2.0.18-3.1+deb10u1	fixed
	sid, trixie, bookworm, bullseye	2.0.20-2	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
php-horde-form	source	jessie	2.0.8-2+deb8u2	DLA-2162-1
php-horde-form	source	stretch	2.0.15-1+deb9u2
php-horde-form	source	buster	2.0.18-3.1+deb10u1
php-horde-form	source	(unstable)	2.0.20-1		955020

Notes

https://lists.horde.org/archives/announce/2020/001288.html
https://www.zerodayinitiative.com/advisories/ZDI-20-275/
https://github.com/horde/Form/commit/813f8e7e9479fad4546b89c569325ee9eef60b0f