Vulnerability · Published Nov 18, 2021 · Assigned by mitre
CVE-2021-43668
Medium 5.5
In plain English
A medium-severity security flaw in the github.com/ethereum/go-ethereum package (Go). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 82.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with "runtime error: invalid memory address or nil pointer dereference" and arise a SEGV signal.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/ethereum/go-ethereum | no fix listed | GHSA-5m8f-chrv-7rw5 |
| Ubuntu:22.04:LTS | golang-goleveldb | no fix listed | UBUNTU-CVE-2021-43668 |
| Ubuntu:24.04:LTS | golang-goleveldb | no fix listed | UBUNTU-CVE-2021-43668 |
| Ubuntu:25.10 | golang-goleveldb | no fix listed | UBUNTU-CVE-2021-43668 |
| Ubuntu:26.04:LTS | golang-goleveldb | no fix listed | UBUNTU-CVE-2021-43668 |
| Ubuntu:26.10 | golang-goleveldb | no fix listed | UBUNTU-CVE-2021-43668 |
Affected products (as reported)
References
- https://github.com/ethereum/go-ethereum/issues/23866 x_refsource_MISC