Vulnerability identifier: #VU49213
Vulnerability risk: High
CVSSv3.1: 7.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:H/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-284
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Loopring
Web applications /
Cryptocurrency software
Vendor: Loopring Project
Description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. The sellTokenForLRC function in the vault protocol in the smart contract implementation for Loopring (LRC), an Ethereum token, lacks access control for fee swapping and thus allows price manipulation.
Note, the vulnerability has been exploited in the wild in November 2020.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Loopring: All versions
External links
http://blocksecteam.medium.com/loopring-lrc-protocol-incident-66e9470bd51f
http://etherscan.io/address/0x4b89f8996892d137c3de1312d1dd4e4f4ffca171
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.