Synology Universal Search up to 1.0.5 Highlight Preview improper authorization

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 (≈)
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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.
7.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Synology Universal Search up to 1.0.5 and classified as critical. Affected by this vulnerability is an unknown functionality of the component Highlight Preview. Performing a manipulation results in improper authorization. This vulnerability is reported as CVE-2017-16773. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Synology Universal Search up to 1.0.5. It has been classified as critical. This affects an unknown part of the component Highlight Preview. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Improper authorization vulnerability in Highlight Preview in Synology Universal Search before 1.0.5-0135 allows remote authenticated users to bypass permission checks for directories in POSIX mode.

The bug was discovered 05/31/2018. The weakness was disclosed 07/05/2018 (Website). The advisory is shared at synology.com. This vulnerability is uniquely identified as CVE-2017-16773 since 11/10/2017. It is possible to initiate the attack remotely. A authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 35 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.0.5-0135 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.1

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

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Synology Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / 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: Universal Search 1.0.5-0135

Timelineinfo

11/10/2017 🔍
05/31/2018 +202 days 🔍
07/05/2018 +34 days 🔍
07/05/2018 +0 days 🔍
07/05/2018 +0 days 🔍
04/03/2023 +1733 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_18_27
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-16773 (🔍)
GCVE (CVE): GCVE-0-2017-16773
GCVE (VulDB): GCVE-100-120417

Entryinfo

Created: 07/05/2018 23:14
Updated: 04/03/2023 14:32
Changes: 07/05/2018 23:14 (58), 02/25/2020 20:31 (2), 04/03/2023 14:27 (4), 04/03/2023 14:32 (12)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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