CVE-2018-14085 — HIGH (7.5)

Vulnerability Description

An issue was discovered in a smart contract implementation for UserWallet 0x0a7bca9FB7AfF26c6ED8029BB6f0F5D291587c42, an Ethereum token. First, suppose that the owner adds the evil contract address to his sweepers. The evil contract looks like this: contract Exploit { uint public start; function sweep(address _token, uint _amount) returns (bool) { start = 0x123456789; return true;} }. Then, when one calls the function sweep() in the UserWallet contract, it will change the sweeperList to 0X123456789.

CVSS Score

7.5

HIGH

CVSS:3.0/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
Userwallet Project	Userwallet	-

Related Weaknesses (CWE)

CWE-20

References

https://github.com/hellowuzekai/blockchains/blob/master/delegatecall.mdExploitThird Party Advisory
https://github.com/hellowuzekai/blockchains/blob/master/delegatecall.mdExploitThird Party Advisory

FAQ

What is CVE-2018-14085?

CVE-2018-14085 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in a smart contract implementation for UserWallet 0x0a7bca9FB7AfF26c6ED8029BB6f0F5D291587c42, an Ethereum token. First, suppose that the owner adds the evil contract address to...

How severe is CVE-2018-14085?

CVE-2018-14085 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-2018-14085?

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