Vulnerability Details : CVE-2019-9858

Remote code execution was discovered in Horde Groupware Webmail 5.2.22 and 5.2.17. Horde/Form/Type.php contains a vulnerable class that handles image upload in forms. When the Horde_Form_Type_image method onSubmit() is called on uploads, it invokes the functions getImage() and _getUpload(), which uses unsanitized user input as a path to save the image. The unsanitized POST parameter object[photo][img][file] is saved in the $upload[img][file] PHP variable, allowing an attacker to manipulate the $tmp_file passed to move_uploaded_file() to save the uploaded file. By setting the parameter to (for example) ../usr/share/horde/static/bd.php, one can write a PHP backdoor inside the web root. The static/ destination folder is a good candidate to drop the backdoor because it is always writable in Horde installations. (The unsanitized POST parameter went probably unnoticed because it's never submitted by the forms, which default to securely using a random path.)
Vulnerability category: Directory traversalExecute code
Published 2019-05-29 17:29:01
Updated 2022-04-18 17:13:18
Source MITRE
View at NVD,
At least one public exploit which can be used to exploit this vulnerability exists!

Exploit prediction scoring system (EPSS) score for CVE-2019-9858

Probability of exploitation activity in the next 30 days: 94.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 99 % EPSS Score History EPSS FAQ

Metasploit modules for CVE-2019-9858

  • Horde Form File Upload Vulnerability
    Disclosure Date: 2019-03-24
    First seen: 2020-04-26
    Horde Groupware Webmail contains a flaw that allows an authenticated remote attacker to execute arbitrary PHP code. The exploitation requires the Turba subcomponent to be installed. This module was tested on Horde versions 5.2.22 and 5.2.17 running Horde For

CVSS scores for CVE-2019-9858

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source

CWE ids for CVE-2019-9858

  • The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
    Assigned by: (Primary)

References for CVE-2019-9858

Products affected by CVE-2019-9858

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