CVE-2020-8866
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability96. percentile9.6%
Product
Horde Groupware
PublishedMar 23, 2020
First seenMar 23, 2020
Weakness typeCWE-434Unrestricted upload of dangerous file type
How to fix
Update
- horde horde_form2.0.20 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| horde groupware | 5.2.22 | — |
| horde horde_form | v < 2.0.20 | 2.0.20 |
| debian debian_linux | 8.0 | — |
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