Vulnerability · Published Aug 6, 2020 · Assigned by GitHub_M

CVE-2020-15114Denial of Service in etcd

High 7.7

In plain English

A high-severity uncontrolled resource consumption in etcd from etcd-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)1.1%top 33.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

In etcd before versions 3.3.23 and 3.4.10, the etcd gateway is a simple TCP proxy to allow for basic service discovery and access. However, it is possible to include the gateway address as an endpoint. This results in a denial of service, since the endpoint can become stuck in a loop of requesting itself until there are no more available file descriptors to accept connections on the gateway.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	etcd	3.3.25+dfsg-5	DEBIAN-CVE-2020-15114
Debian:13	etcd	3.3.25+dfsg-5	DEBIAN-CVE-2020-15114
Debian:14	etcd	3.3.25+dfsg-5	DEBIAN-CVE-2020-15114
Go	go.etcd.io/etcd	3.4.10	GHSA-2xhq-gv6c-p224
Go	go.etcd.io/etcd	3.3.23	GHSA-2xhq-gv6c-p224

Affected products (as reported)

Vendor	Product	Versions
etcd-io	etcd	< 3.3.23< 3.4.10

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

https://github.com/etcd-io/etcd/security/advisories/GHSA-2xhq-gv6c-p224 x_refsource_CONFIRM
FEDORA-2020-cd43b84c16 vendor-advisory, x_refsource_FEDORA