Home/CVE/This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmai
CVE

CVE-2020-8866

This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmai

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.

MEDIUM · CVSS 6.5 EPSS 0.03533
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-434Unrestricted Upload of File with Dangerous Type
▤

Affected Products & Versions

3
horde groupwareall versions
horde form< 2.0.20
debian linuxall versions
⚠

Public Exploits & PoCs

2
webappsHorde Groupware Webmail Edition 5.2.22 - PHAR Loading2020-03-11
webappsHorde Groupware Webmail Edition 5.2.22 - PHP File Inclusion2020-03-11
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · zdi-disclosures@trendmicro.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Mar 2020 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.debian.org/debian-lts-announce/2020/03/msg00036.htmlMailing ListThird Party Advisory
https://lists.horde.org/archives/announce/2020/001288.htmlMailing ListVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-275/Third Party AdvisoryVDB Entry
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