{"schema_version":"1.7.3","id":"GHSA-6g87-ff9q-v847","published":"2018-09-17T20:46:52Z","modified":"2024-11-19T18:23:42.891487Z","aliases":["CVE-2018-1000518","PYSEC-2018-79"],"summary":"websockets is vulnerable to denial of service by memory exhaustion","details":"The Python websockets library 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 appears to be exploitable via sending a specially crafted frame on an established connection. This vulnerability appears to have been fixed in version 5.0","affected":[{"package":{"name":"websockets","ecosystem":"PyPI","purl":"pkg:pypi/websockets"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0"},{"fixed":"5.0"}]}],"versions":["4.0","4.0.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2018/09/GHSA-6g87-ff9q-v847/GHSA-6g87-ff9q-v847.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000518"},{"type":"WEB","url":"https://github.com/aaugustin/websockets/pull/407"},{"type":"PACKAGE","url":"https://github.com/aaugustin/websockets"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/websockets/PYSEC-2018-79.yaml"}],"database_specific":{"cwe_ids":["CWE-400"],"github_reviewed":true,"github_reviewed_at":"2020-06-16T21:19:15Z","nvd_published_at":"2018-06-26T16:29:00Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"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"}]}