Synology Calendar up to 2.0.1 Access Control SYNO.Cal.EventBase access control

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Synology Calendar up to 2.0.1 and classified as critical. Affected by this vulnerability is the function SYNO.Cal.EventBase of the component Access Control. The manipulation results in access control. This vulnerability is reported as CVE-2017-15891. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Synology Calendar up to 2.0.1 (Calendar Software). Affected is the function SYNO.Cal.EventBase of the component Access Control. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Improper access control vulnerability in SYNO.Cal.EventBase in Synology Calendar before 2.0.1-0242 allows remote authenticated users to modify calendar event via unspecified vectors.

The bug was discovered 12/08/2017. The weakness was disclosed 12/08/2017 (Website). The advisory is shared for download at synology.com. This vulnerability is traded as CVE-2017-15891 since 10/25/2017. It is possible to launch the attack remotely. A authentication is needed for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 2.0.1-0242 eliminates this vulnerability.

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Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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 2.0.1-0242

Timelineinfo

10/25/2017 🔍
12/08/2017 +44 days 🔍
12/08/2017 +0 days 🔍
12/08/2017 +0 days 🔍
12/09/2017 +1 days 🔍
01/17/2023 +1865 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_17_68
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-15891 (🔍)
GCVE (CVE): GCVE-0-2017-15891
GCVE (VulDB): GCVE-100-110352

Entryinfo

Created: 12/09/2017 11:39
Updated: 01/17/2023 09:50
Changes: 12/09/2017 11:39 (59), 12/12/2019 21:28 (2), 01/17/2023 09:50 (4)
Complete: 🔍
Cache ID: 216::103

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