CVE-2021-33403 — HIGH (7.5)

Vulnerability Description

An integer overflow in the transfer function of a smart contract implementation for Lancer Token, an Ethereum ERC20 token, allows the owner to cause unexpected financial losses between two large accounts during a transaction.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Blocklancertoken Project	Blocklancertoken	-

Related Weaknesses (CWE)

CWE-190

References

https://cn.etherscan.com/address/0x63e634330a20150dbb61b15648bc73855d6ccf07#codeExploitThird Party Advisory
https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/LNCToken.mdExploitThird Party Advisory
https://cn.etherscan.com/address/0x63e634330a20150dbb61b15648bc73855d6ccf07#codeExploitThird Party Advisory
https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/LNCToken.mdExploitThird Party Advisory

FAQ

What is CVE-2021-33403?

CVE-2021-33403 is a vulnerability with a CVSS score of 7.5 (HIGH). An integer overflow in the transfer function of a smart contract implementation for Lancer Token, an Ethereum ERC20 token, allows the owner to cause unexpected financial losses between two large accou...

How severe is CVE-2021-33403?

CVE-2021-33403 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33403?

Check the references section above for vendor advisories and patch information. Affected products include: Blocklancertoken Project Blocklancertoken.