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CVE-2019-9858
CVE ID
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CVE-2019-9858
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
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.)
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CVSS V3 Severity and Metrics
General Information
Vendors
- debian,
- horde
Products
- debian linux 8.0,
- debian linux 9.0,
- groupware 5.2.17,
- groupware 5.2.22
References
Advisory
Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
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