VDB-120412 · CVE-2018-13231 · GCVE-0-2018-13231

ENTER sell Smart Contract integer overflow

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.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in ENTER. The affected element is the function sell. Executing a manipulation as part of Smart Contract can lead to integer overflow. This vulnerability is tracked as CVE-2018-13231. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in ENTER (unknown version). This vulnerability affects the function sell. The manipulation as part of a Smart Contract leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The sell function of a smart contract implementation for ENTER (ENTR) (Contract Name: EnterToken), an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a seller's assets.

The bug was discovered 07/04/2018. The weakness was disclosed 07/05/2018 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-13231 since 07/04/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

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

The entries VDB-120377, VDB-120378, VDB-120379 and VDB-120380 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

ENTER

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
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: Integer overflow
CWE: CWE-190 / CWE-189
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: 🔍

Timelineinfo

07/04/2018 🔍
07/04/2018 +0 days 🔍
07/04/2018 +0 days 🔍
07/05/2018 +1 days 🔍
07/05/2018 +0 days 🔍
02/25/2020 +600 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2018-13231 (🔍)
GCVE (CVE): GCVE-0-2018-13231
GCVE (VulDB): GCVE-100-120412
See also: 🔍

Entryinfo

Created: 07/05/2018 12:52
Updated: 02/25/2020 19:57
Changes: 07/05/2018 12:52 (55), 02/25/2020 19:57 (1)
Complete: 🔍
Cache ID: 216::103