ZDI-20-275: Horde Groupware Webmail Edition add Page Unrestricted File Upload Arbitrary File Creation Vulnerability
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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Horde Groupware |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-20-275?
The severity of ZDI-20-275 is classified as high due to the potential for remote file creation.
How do I fix ZDI-20-275?
To fix ZDI-20-275, update to the latest version of Horde Groupware Webmail Edition that addresses this vulnerability.
Who is affected by ZDI-20-275?
ZDI-20-275 affects installations of Horde Groupware Webmail Edition that are not patched.
Is authentication required to exploit ZDI-20-275?
Yes, authentication is required to exploit the ZDI-20-275 vulnerability.
What component of Horde Groupware Webmail Edition is vulnerable in ZDI-20-275?
The vulnerable component in ZDI-20-275 is the add.php file, which lacks proper validation.
- agent/references
- agent/type
- agent/softwarecombine
- agent/severity
- agent/title
- agent/description
- agent/event
- agent/source
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- collector/zdi-advisory
- source/ZDI
- alias/ZDI-20-275
- alias/ZDI-CAN-10125
- alias/CVE-2020-8866
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/horde
- canonical/horde groupware