{"id":"ALPINE-CVE-2019-3857","details":"An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.","modified":"2026-03-09T01:17:22.589124Z","published":"2019-03-25T19:29:01.837Z","upstream":["CVE-2019-3857"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2019-3857"}],"affected":[{"package":{"name":"libssh2","ecosystem":"Alpine:v3.10","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-3857.json"}},{"package":{"name":"libssh2","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-3857.json"}},{"package":{"name":"libssh2","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-3857.json"}},{"package":{"name":"libssh2","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-3857.json"}},{"package":{"name":"libssh2","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-3857.json"}},{"package":{"name":"libssh2","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-3857.json"}},{"package":{"name":"libssh2","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-3857.json"}},{"package":{"name":"libssh2","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-3857.json"}},{"package":{"name":"libssh2","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/libssh2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1-r0"}]}],"versions":["1.2.8-r0","1.2.9-r0","1.3.0-r0","1.4.0-r0","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.5.0-r0","1.6.0-r0","1.7.0-r0","1.7.0-r1","1.7.0-r2","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.0-r4"],"ecosystem_specific"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