CVE-2018-11239 — HIGH (7.5)

Vulnerability Description

An integer overflow in the _transfer function of a smart contract implementation for Hexagon (HXG), an Ethereum ERC20 token, allows attackers to accomplish an unauthorized increase of digital assets by providing a _to argument in conjunction with a large _value argument, as exploited in the wild in May 2018, aka the "burnOverflow" issue.

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
Hexagontoken	Hexagon	-

Related Weaknesses (CWE)

CWE-190

References

https://peckshield.com/2018/05/18/burnOverflow/ExploitThird Party Advisory
https://peckshield.com/2018/05/18/burnOverflow/ExploitThird Party Advisory

FAQ

What is CVE-2018-11239?

CVE-2018-11239 is a vulnerability with a CVSS score of 7.5 (HIGH). An integer overflow in the _transfer function of a smart contract implementation for Hexagon (HXG), an Ethereum ERC20 token, allows attackers to accomplish an unauthorized increase of digital assets b...

How severe is CVE-2018-11239?

CVE-2018-11239 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-2018-11239?

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