Synology Download Station up to 3.5/3.8.5 Downloader server-side request forgery

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Synology Download Station up to 3.5/3.8.5. Affected is an unknown function of the component Downloader. Performing a manipulation results in server-side request forgery. This vulnerability is identified as CVE-2017-11149. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Synology Download Station up to 3.5/3.8.5. This affects an unknown code of the component Downloader. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Server-side request forgery (SSRF) vulnerability in Downloader in Synology Download Station 3.8.x before 3.8.5-3475 and 3.x before 3.5-2984 allows remote authenticated users to download arbitrary local files via crafted URI.

The bug was discovered 08/11/2017. The weakness was released 08/14/2017 (Website). It is possible to read the advisory at synology.com. This vulnerability is uniquely identified as CVE-2017-11149 since 07/10/2017. It is possible to initiate the attack remotely. A authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 3.5-2984 or 3.8.5-3475 eliminates this vulnerability.

Entry connected to this vulnerability is available at VDB-105293. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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: 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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Download Station 3.5-2984/3.8.5-3475

Timelineinfo

07/10/2017 🔍
08/11/2017 +32 days 🔍
08/14/2017 +3 days 🔍
08/14/2017 +0 days 🔍
08/15/2017 +1 days 🔍
12/15/2022 +1948 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_17_28
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-11149 (🔍)
GCVE (CVE): GCVE-0-2017-11149
GCVE (VulDB): GCVE-100-105291
See also: 🔍

Entryinfo

Created: 08/15/2017 08:55
Updated: 12/15/2022 17:15
Changes: 08/15/2017 08:55 (60), 11/06/2019 20:11 (2), 12/15/2022 17:15 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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