Summaryinfo

A vulnerability was found in Synology Calendar up to 2.3.1. It has been classified as critical. Affected by this vulnerability is an unknown functionality of the file drivers_syno_import_user.php of the component HTTP Header Handler. The manipulation of the argument X-Real-IP as part of Command leads to os command injection. This vulnerability is listed as CVE-2019-11829. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Detailsinfo

A vulnerability was found in Synology Calendar up to 2.3.1 (Calendar Software) and classified as critical. This issue affects an unknown code block of the file drivers_syno_import_user.php of the component HTTP Header Handler. The manipulation of the argument X-Real-IP as part of a Command leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

OS command injection vulnerability in drivers_syno_import_user.php in Synology Calendar before 2.3.1-0617 allows remote attackers to execute arbitrary commands via the crafted 'X-Real-IP' header.

The weakness was presented 06/30/2019 (Website). The advisory is shared at synology.com. The identification of this vulnerability is CVE-2019-11829 since 05/08/2019. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

By approaching the search of inurl:drivers_syno_import_user.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.3.1-0617 eliminates this vulnerability.

See VDB-137089 for similar entry. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Calendar Software

Vendor

• Synology

Name

• Calendar

Version

• 2.3.0
• 2.3.1

License

• commercial

Website

• Vendor: https://www.synology.com/

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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