VDB-102192 · CVE-2016-7833 · BID 94831

Cybozu Dezie up to 8.1.1 DBM 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.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Cybozu Dezie up to 8.1.1. It has been declared as problematic. This affects an unknown part of the component DBM Handler. The manipulation results in access control. This vulnerability is reported as CVE-2016-7833. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Cybozu Dezie up to 8.1.1. It has been classified as critical. Affected is some unknown processing of the component DBM Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on integrity, and availability. CVE summarizes:

Cybozu Dezie 8.0.0 to 8.1.1 allows remote attackers to bypass access restrictions to delete an arbitrary DBM (Cybozu Dezie proprietary format) file via unspecified vectors.

The bug was discovered 12/12/2016. The weakness was disclosed 06/09/2017 (Website). The advisory is shared for download at jvn.jp. This vulnerability is traded as CVE-2016-7833 since 09/09/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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 179 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 vulnerability is also documented in the vulnerability database at SecurityFocus (BID 94831†). The entry VDB-102191 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Cybozu

Name

Dezie

Version

License

commercial

Website

Vendor: https://cybozu-global.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/09/2016 🔍
12/12/2016 +94 days 🔍
12/12/2016 +0 days 🔍
06/09/2017 +179 days 🔍
06/09/2017 +0 days 🔍
06/10/2017 +1 days 🔍
10/15/2019 +857 days 🔍

Sourcesinfo

Vendor: cybozu-global.com

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

CVE: CVE-2016-7833 (🔍)
GCVE (CVE): GCVE-0-2016-7833
GCVE (VulDB): GCVE-100-102192
SecurityFocus: 94831 - Cybozu Dezie JVN#16781735 Multiple Security Bypass Vulnerabilities

See also: 🔍

Entryinfo

Created: 06/10/2017 08:55
Updated: 10/15/2019 18:40
Changes: 06/10/2017 08:55 (61), 10/15/2019 18:40 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.