Sushiro App up to 2.1.16 on iOS/Android SSL Certificate Validator certificate validation

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.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Sushiro App up to 2.1.16 on iOS/Android. This affects an unknown part of the component SSL Certificate Validator. Executing a manipulation can lead to certificate validation. This vulnerability is tracked as CVE-2016-4830. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Sushiro App up to 2.1.16 on iOS/Android. This vulnerability affects an unknown part of the component SSL Certificate Validator. The manipulation with an unknown input 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, integrity, and availability. CVE summarizes:

Sushiro App for iOS 2.1.16 and earlier and Sushiro App for Android 2.1.16.1 and earlier do not verify SSL certificates.

The bug was discovered 06/29/2016. The weakness was disclosed 04/21/2017 by Yuta Teshima with Cyber Defense Institute, Inc. (Website). The advisory is shared for download at jvn.jp. This vulnerability was named CVE-2016-4830 since 05/17/2016. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1587.003.

The vulnerability was handled as a non-public zero-day exploit for at least 296 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 91490†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Sushiro

Name

• App

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4
• 2.1.5
• 2.1.6
• 2.1.7
• 2.1.8
• 2.1.9
• 2.1.10
• 2.1.11
• 2.1.12
• 2.1.13
• 2.1.14
• 2.1.15
• 2.1.16

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

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

05/17/2016 🔍
06/29/2016 +43 days 🔍
06/29/2016 +0 days 🔍
04/21/2017 +296 days 🔍
04/21/2017 +0 days 🔍
04/21/2017 +0 days 🔍
09/19/2020 +1247 days 🔍

Sourcesinfo

Advisory: jvn.jp
Researcher: Yuta Teshima
Organization: Cyber Defense Institute, Inc.
Status: Not defined

CVE: CVE-2016-4830 (🔍)
GCVE (CVE): GCVE-0-2016-4830
GCVE (VulDB): GCVE-100-100432
SecurityFocus: 91490 - Sushiro App CVE-2016-4830 SSL Certificate Validation Security Bypass Vulnerability
OSVDB: - CVE-2016-4830 - Akindo Sushiro Co Ltd - Sushiro - Medium

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

Entryinfo

Created: 04/21/2017 21:47
Updated: 09/19/2020 11:33
Changes: 04/21/2017 21:47 (64), 09/19/2020 11:33 (2)
Complete: 🔍
Cache ID: 216::103

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

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