Cybozu Office up to 10.7.0 Image Remote information disclosure

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.
5.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Cybozu Office up to 10.7.0. This impacts an unknown function of the component Image Handler. Such manipulation leads to information disclosure (Remote). This vulnerability is documented as CVE-2018-0526. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Cybozu Office up to 10.7.0 (Office Suite Software) and classified as critical. Affected by this issue is an unknown functionality of the component Image Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Remote). Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Cybozu Office 10.0.0 to 10.7.0 allow remote attackers to display an image located in an external server via unspecified vectors.

The bug was discovered 05/22/2018. The weakness was released 06/26/2018 (Website). The advisory is shared for download at jvn.jp. This vulnerability is handled as CVE-2018-0526 since 11/27/2017. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

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.

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

Entries connected to this vulnerability are available at VDB-119877, VDB-119879, VDB-119884 and VDB-119878. 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: 5.8
VulDB Meta Temp Score: 5.8

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
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

Name: Remote
Class: Information disclosure / Remote
CWE: CWE-200 / 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 🔍
05/22/2018 +176 days 🔍
06/26/2018 +34 days 🔍
06/26/2018 +0 days 🔍
06/26/2018 +0 days 🔍
02/21/2020 +605 days 🔍

Sourcesinfo

Vendor: cybozu-global.com

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

CVE: CVE-2018-0526 (🔍)
GCVE (CVE): GCVE-0-2018-0526
GCVE (VulDB): GCVE-100-119876
See also: 🔍

Entryinfo

Created: 06/27/2018 00:07
Updated: 02/21/2020 19:19
Changes: 06/27/2018 00:07 (63), 02/21/2020 19:19 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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