SB2021102529 - NULL pointer dereference in go-ethereum

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2021-41173)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper handling of nil pointer values in the snap/1 request handler when processing a crafted snap/1 GetTrieNodes message from a peer. A remote attacker can send a specially crafted snap/1 GetTrieNodes request to cause a denial of service.

The issue can trigger a panic in vulnerable nodes during snap/1 protocol handling.

Remediation

Install update from vendor's website.

References

• https://github.com/ethereum/go-ethereum/security/advisories/GHSA-59hh-656j-3p7v
• https://github.com/advisories/GHSA-59hh-656j-3p7v