CVE-2020-8866

moderate-risk
Published 2020-03-23

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.

Do I need to act?

~
3.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
2 public exploits available
48210, 48209
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (3)

Horde Form

Affected Vendors

Debian Horde

References (6)

Mailing List https://lists.debian.org/debian-lts-announce/2020/03/msg00036.html
Mailing List https://lists.horde.org/archives/announce/2020/001288.html
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-20-275/
Mailing List https://lists.debian.org/debian-lts-announce/2020/03/msg00036.html
Mailing List https://lists.horde.org/archives/announce/2020/001288.html
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-20-275/
40
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 7/34 · Low
Exposure 9/34 · Low