CVE-2021-34273
BTC2X Smart Contract 'owned' Function Arbitrary Supply Hijack Vulnerability
Description
A security flaw in the 'owned' function of a smart contract implementation for BTC2X (B2X), a tradeable Ethereum ERC20 token, allows attackers to hijack victim accounts and arbitrarily increase the digital supply of assets.
INFO
Published Date :
Aug. 3, 2021, 10:15 p.m.
Last Modified :
July 12, 2022, 5:42 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-34273 has a 4 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-34273.
| URL | Resource |
|---|---|
| https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/BTC2X.md | Exploit Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python Shell
AChecker (Access Control Checker) is an automated static analysis tool for detecting access control vulnerabilities in smart contracts.
Python
A Context-Sensitive and Scalable Method for Restructured Cloning Vulnerability Detection in Ethereum Smart Contracts
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-34273 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-34273 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-863 NVD-CWE-Other -
Initial Analysis by [email protected]
Aug. 11, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/BTC2X.md No Types Assigned https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/BTC2X.md Exploit, Third Party Advisory Added CWE NIST CWE-863 Added CPE Configuration OR *cpe:2.3:a:b2x_project:b2x:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-34273 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-34273
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.01%
score
0.41225
percentile