Cybozu Garoon up to 4.6.1 Access Restriction access control

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.
5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Cybozu Garoon up to 4.6.1. This issue affects some unknown processing of the component Access Restriction. Such manipulation leads to access control. This vulnerability is uniquely identified as CVE-2018-0550. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Cybozu Garoon up to 4.6.1 (Groupware Software). It has been rated as critical. Affected by this issue is an unknown part of the component Access Restriction. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Cybozu Garoon 3.5.0 to 4.6.1 allows remote authenticated attackers to bypass access restriction to view the closed title of "Space" via unspecified vectors.

The bug was discovered 04/09/2018. The weakness was disclosed 04/16/2018 (Website). The advisory is shared for download at jvn.jp. This vulnerability is handled as CVE-2018-0550 since 11/27/2017. The attack may be launched remotely. A simple authentication is necessary for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-116246, VDB-116247, VDB-116248 and VDB-116249 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 4.3
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/27/2017 🔍
04/09/2018 +133 days 🔍
04/16/2018 +6 days 🔍
04/16/2018 +0 days 🔍
04/16/2018 +0 days 🔍
01/25/2020 +649 days 🔍

Sourcesinfo

Vendor: cybozu-global.com

Advisory: jvn.jp
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-0550 (🔍)
GCVE (CVE): GCVE-0-2018-0550
GCVE (VulDB): GCVE-100-116252
See also: 🔍

Entryinfo

Created: 04/16/2018 22:08
Updated: 01/25/2020 11:38
Changes: 04/16/2018 22:08 (59), 01/25/2020 11:38 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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