Advisory Details

March 10th, 2020

Horde Groupware Webmail Edition add Page Unrestricted File Upload Arbitrary File Creation Vulnerability

CVE ID	CVE-2020-8866
CVSS SCORE	4.3, AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
AFFECTED VENDORS	Horde
AFFECTED PRODUCTS	Groupware Webmail Edition
VULNERABILITY DETAILS	This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition. 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.
ADDITIONAL DETAILS	Horde has issued an update to correct this vulnerability. More details can be found at: https://lists.horde.org/archives/announce/2020/001288.html
DISCLOSURE TIMELINE	2020-02-26 - Vulnerability reported to vendor 2020-03-10 - Coordinated public release of advisory
CREDIT	Andrea Cardaci

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