Synology Web Station up to 2.1.3 Error Page Phishing redirect

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-$5k0.00

Summaryinfo

A vulnerability was found in Synology Web Station up to 2.1.3. It has been classified as critical. This impacts an unknown function of the component Error Page. Performing a manipulation results in redirect (Phishing). This vulnerability is cataloged as CVE-2018-8913. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Synology Web Station up to 2.1.3. This affects an unknown code block of the component Error Page. The manipulation with an unknown input leads to a redirect vulnerability (Phishing). CWE is classifying the issue as CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Missing custom error page vulnerability in Synology Web Station before 2.1.3-0139 allows remote attackers to conduct phishing attacks via a crafted URL.

The bug was discovered 03/22/2018. The weakness was shared 04/01/2019 (Website). The advisory is shared at synology.com. This vulnerability is uniquely identified as CVE-2018-8913 since 03/22/2018. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1204.001 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 375 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.1.3-0139 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 7.1
CNA Vector (Synology Inc.): 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Name: Phishing
Class: Redirect / Phishing
CWE: CWE-601
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Web Station 2.1.3-0139

Timelineinfo

03/22/2018 🔍
03/22/2018 +0 days 🔍
04/01/2019 +375 days 🔍
04/01/2019 +0 days 🔍
08/21/2023 +1603 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_18_29
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-8913 (🔍)
GCVE (CVE): GCVE-0-2018-8913
GCVE (VulDB): GCVE-100-132669

Entryinfo

Created: 04/01/2019 22:42
Updated: 08/21/2023 09:19
Changes: 04/01/2019 22:42 (58), 05/23/2020 13:03 (2), 08/21/2023 09:17 (4), 08/21/2023 09:19 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!