PT-2018-11342 · Block 18 · Block 18

Published 2018-06-25 · Updated 2018-08-30 · CVE-2018-12703

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions Block 18 (18T) smart contract implementation (affected versions not specified)

Description The issue concerns the approveAndCall function in a smart contract implementation, which allows attackers to steal assets by transferring the contract's balances into their account. This is possible because the callcode is not verified, leading to the "evilReflex" issue.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-12703

Affected Products

Block 18

References · 3

• 🔥 https://peckshield.com/2018/06/23/evilReflex · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-12703 · Security Note
• https://huobiglobal.zendesk.com/hc/en-us/articles/360000110521-HADAX-Suspends-18T-and-GVE-Deposits-and-Withdrawals · Note