CVE-2020-8865

Name	CVE-2020-8865
Description	This vulnerability allows remote attackers to execute local PHP files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within edit.php. When parsing the params[template] parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10469.
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-2175-1
Debian Bugs	955019

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
php-horde-trean (PTS)	jessie, jessie (lts)	1.1.1-2+deb8u1	fixed
	stretch	1.1.7-1+deb9u1	fixed
	buster	1.1.9-3+deb10u1	fixed
	sid, bullseye, bookworm	1.1.10-3	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
php-horde-trean	source	jessie	1.1.1-2+deb8u1	DLA-2175-1
php-horde-trean	source	stretch	1.1.7-1+deb9u1
php-horde-trean	source	buster	1.1.9-3+deb10u1
php-horde-trean	source	(unstable)	1.1.10-1		955019

Notes

https://lists.horde.org/archives/announce/2020/001286.html
https://www.zerodayinitiative.com/advisories/ZDI-20-276/
https://github.com/horde/trean/commit/db0714a0c04d87bda9e2852f1b0d259fc281ca75
https://github.com/horde/trean/commit/055029f551501803d7e293a48316e2cf31307908