Vulnerability · Published Mar 23, 2020 · Assigned by zdi
CVE-2020-8866
Medium 4.3
In plain English
A medium-severity unrestricted file upload in Groupware Webmail Edition from Horde. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 9.6% (higher than 95% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | php-horde-form | 2.0.20-1 | DEBIAN-CVE-2020-8866 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Horde | Groupware Webmail Edition | 5.2.22 |
Weakness: CWE-434 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- https://www.zerodayinitiative.com/advisories/ZDI-20-275/ x_refsource_MISC
- https://lists.horde.org/archives/announce/2020/001288.html x_refsource_MISC
- [debian-lts-announce] 20200329 [SECURITY] [DLA 2162-1] php-horde-form security update mailing-list, x_refsource_MLIST