VDB-102178 · CVE-2016-7816 · BID 94547

Cybozu Kintone Mobile up to 1.0.6 on Android X.509 Certificate Validation Crafted Certificate certificate validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Cybozu Kintone Mobile up to 1.0.6 on Android. It has been declared as problematic. Affected is an unknown function of the component X.509 Certificate Validation. Executing a manipulation as part of Crafted Certificate can lead to certificate validation. This vulnerability appears as CVE-2016-7816. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in Cybozu Kintone Mobile up to 1.0.6 on Android (Android App Software). This vulnerability affects some unknown processing of the component X.509 Certificate Validation. The manipulation as part of a Crafted Certificate leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality. CVE summarizes:

The Cybozu kintone mobile for Android 1.0.6 and earlier does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

The bug was discovered 11/28/2016. The weakness was presented 06/09/2017 (Website). The advisory is available at jvn.jp. This vulnerability was named CVE-2016-7816 since 09/09/2016. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1587.003 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 193 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 94547†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
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: Certificate validation
CWE: CWE-295 / CWE-287
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

09/09/2016 🔍
11/28/2016 +80 days 🔍
11/28/2016 +0 days 🔍
06/09/2017 +193 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-2016-7816 (🔍)
GCVE (CVE): GCVE-0-2016-7816
GCVE (VulDB): GCVE-100-102178
SecurityFocus: 94547 - Cybozu Kintone App CVE-2016-7816 SSL Certificate Validation Security Bypass Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 06/10/2017 08:51
Updated: 10/15/2019 17:23
Changes: 06/10/2017 08:51 (63), 10/15/2019 17:23 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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