Resource exhaustion in Ethereum Go-Ethereum
CVE-2020-26264
Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth before version 1.9.25 a denial-of-service vulnerability can make a LES server crash via malicious GetProofsV2 request from a connected LES client. This vulnerability only concerns users explicitly enabling les server; disabling les prevents the exploit. The vulnerability was patched in version 1.9.25.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.019 (78.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: +0.000
Affected products
- Ethereum Go-Ethereum — versions < 1.9.25
- Ethereum Go
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q (Third Party Advisory)
- github.com/ethereum/go-ethereum/pull/21896 (Patch, Third Party Advisory)
- github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46 (Patch, Third Party Advisory)
- github.com/ethereum/go-ethereum/releases/tag/v1.9.25 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26264?
- CVE-2020-26264 is a medium-severity vulnerability in Ethereum Go-Ethereum, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2020-12-11.
- How severe is CVE-2020-26264?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-26264 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.