CVE-2018-12018

Public Exploit

Description

The GetBlockHeadersMsg handler in the LES protocol implementation in Go Ethereum (aka geth) before 1.8.11 may lead to an access violation because of an integer signedness error for the array index, which allows attackers to launch a Denial of Service attack by sending a packet with a -1 query.Skip value. The vulnerable remote node would be crashed by such an attack immediately, aka the EPoD (Ethereum Packet of Death) issue.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 12.25% Top 10%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory peckshield.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/ethereum/go-ethereum/releases/tag/v1.8.11 third party advisory
https://github.com/ethereum/go-ethereum/commit/a5237a27eaf81946a3edb4fafe13ed6359d119e4 third party advisory patch
https://github.com/ethereum/go-ethereum/pull/16891 issue tracking third party advisory patch
https://peckshield.com/2018/06/27/EPoD/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2018-12018?
CVE-2018-12018 has been scored as a high severity vulnerability.
How to fix CVE-2018-12018?
To fix CVE-2018-12018, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12018 being actively exploited in the wild?
It is possible that CVE-2018-12018 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~12% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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