VDB-99923 · CVE-2016-4873 · BID 93461

Cybozu Office up to 10.4.0 Project permission

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Cybozu Office up to 10.4.0. It has been classified as problematic. Affected is the function Project. The manipulation leads to permission. This vulnerability is listed as CVE-2016-4873. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Cybozu Office up to 10.4.0 (Office Suite Software) and classified as critical. This issue affects the function Project. The manipulation with an unknown input leads to a permission vulnerability. Using CWE to declare the problem leads to CWE-275. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The "Project" function in Cybozu Office 9.0.0 through 10.4.0 does not properly check access permissions, which allows remote authenticated users to alter project information.

The bug was discovered 10/03/2016. The weakness was presented 04/17/2017 by Yuji Tounai (Website). It is possible to read the advisory at jvn.jp. The identification of this vulnerability is CVE-2016-4873 since 05/17/2016. The attack may be initiated remotely. The requirement for exploitation is a simple authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 196 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 93461†). See VDB-99917 and VDB-99922 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

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

NVD Base Score: 🔍

Exploitinginfo

Class: Permission
CWE: CWE-275 / 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

05/17/2016 🔍
10/03/2016 +139 days 🔍
10/07/2016 +4 days 🔍
04/17/2017 +192 days 🔍
04/17/2017 +0 days 🔍
04/18/2017 +1 days 🔍
08/31/2020 +1231 days 🔍

Sourcesinfo

Advisory: jvn.jp
Researcher: Yuji Tounai
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4873 (🔍)
GCVE (CVE): GCVE-0-2016-4873
GCVE (VulDB): GCVE-100-99923
SecurityFocus: 93461 - Cybozu Office Multiple Security Bypass Vulnerabilities
OSVDB: - CVE-2016-4873 - Cybozu - Office - Operation Restriction Bypass Issue

See also: 🔍

Entryinfo

Created: 04/18/2017 10:32
Updated: 08/31/2020 16:36
Changes: 04/18/2017 10:32 (61), 08/31/2020 16:36 (5)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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