{"id":"ALPINE-CVE-2021-44273","details":"e2guardian v5.4.x \u003c= v5.4.3r is affected by missing SSL certificate validation in the SSL MITM engine. In standalone mode (i.e., acting as a proxy or a transparent proxy), with SSL MITM enabled, e2guardian, if built with OpenSSL v1.1.x, did not validate hostnames in certificates of the web servers that it connected to, and thus was itself vulnerable to MITM attacks.","modified":"2026-11-03T06:32:41.613184289Z","published":"2021-12-23T12:15:07.387Z","upstream":["CVE-2021-44273"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-44273"}],"affected":[{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}},{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}},{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}},{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}},{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}},{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}},{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}},{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}},{"package":{"name":"e2guardian","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/e2guardian?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.4.5r-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-44273.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}