What is CVE-2018-1000518?

CVE-2018-1000518 is a high-severity vulnerability in Websockets Project, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-06-26.

How severe is CVE-2018-1000518?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2018-1000518 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Websockets Project

CVE-2018-1000518

aaugustin websockets version 4 contains a CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in Servers and clients, unless configured with compression=None that can result in Denial of Service by memory exhaustion. This attack appear to be exploitable via Sending a specially crafted frame on an established connection. This vulnerability appears to have been fixed in 5.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.018 (76.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Websockets_project Websockets — versions 4.0
N/a — versions n/a

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

Public proof-of-concept exploits

PalindromeLabs/awesome-websocket-security

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-1000518?: CVE-2018-1000518 is a high-severity vulnerability in Websockets Project, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-06-26.
How severe is CVE-2018-1000518?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-1000518 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.