Synology Calendar up to 2.3.1 HTTP Header drivers_syno_import_user.php X-Real-IP os command injection

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

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 137089 for similar entry.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 7.3
CNA Vector (Synology Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-74 / CWE-707
ATT&CK: T1202

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Calendar 2.3.1-0617

Timelineinfo

05/08/2019 🔍
06/30/2019 +53 days 🔍
06/30/2019 +0 days 🔍
10/09/2023 +1562 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_19_12
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-11829 (🔍)
See also: 🔍

Entryinfo

Created: 06/30/2019 21:46
Updated: 10/09/2023 14:49
Changes: 06/30/2019 21:46 (61), 06/29/2020 10:25 (1), 10/09/2023 14:47 (4), 10/09/2023 14:49 (12)
Complete: 🔍

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