CVE-2020-8866

NameCVE-2020-8866
DescriptionThis 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.
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-2162-1
NVD severitymedium
Debian Bugs955020

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
php-horde-form (PTS)stretch2.0.15-1+deb9u2fixed
stretch (security)2.0.15-1+deb9u1vulnerable
buster2.0.18-3.1+deb10u1fixed
bullseye, sid2.0.20-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
php-horde-formsourcejessie2.0.8-2+deb8u2DLA-2162-1
php-horde-formsourcestretch2.0.15-1+deb9u2
php-horde-formsourcebuster2.0.18-3.1+deb10u1
php-horde-formsource(unstable)2.0.20-1955020

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

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