Synology Chat up to 1.1.0 Chat Preview server-side request forgery

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Synology Chat up to 1.1.0. The affected element is an unknown function of the component Chat Preview. Executing a manipulation can lead to server-side request forgery. This vulnerability is tracked as CVE-2017-11148. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Synology Chat up to 1.1.0 (Chat Software) and classified as critical. This vulnerability affects an unknown functionality of the component Chat Preview. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Server-side request forgery (SSRF) vulnerability in link preview in Synology Chat before 1.1.0-0806 allows remote authenticated users to access intranet resources via unspecified vectors.

The bug was discovered 08/10/2017. The weakness was disclosed 08/11/2017 (Website). The advisory is shared for download at synology.com. This vulnerability was named CVE-2017-11148 since 07/10/2017. The exploitation appears to be easy. The attack can be initiated remotely. The successful exploitation needs a single authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.1.0-0806 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 100310†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Chat Software

Vendor

Synology

Name

Chat

Version

License

commercial

Website

Vendor: https://www.synology.com/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chat 1.1.0-0806

Timelineinfo

07/10/2017 🔍
08/10/2017 +31 days 🔍
08/10/2017 +0 days 🔍
08/11/2017 +1 days 🔍
08/11/2017 +0 days 🔍
08/12/2017 +1 days 🔍
12/15/2022 +1951 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_17_38
Researcher: Synology
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-11148 (🔍)
GCVE (CVE): GCVE-0-2017-11148
GCVE (VulDB): GCVE-100-105232
SecurityFocus: 100310 - Synology Chat CVE-2017-11148 Server Side Request Forgery Security Bypass Vulnerability

Entryinfo

Created: 08/12/2017 10:26
Updated: 12/15/2022 16:15
Changes: 08/12/2017 10:26 (61), 11/06/2019 13:20 (4), 01/08/2021 19:00 (2), 12/15/2022 16:15 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.