{"id":"JLSEC-2025-188","summary":"In libssh2 v1.9.0 and earlier versions, the `SSH_MSG_DISCONNECT` logic in packet.c has an integer...","details":"In libssh2 v1.9.0 and earlier versions, the `SSH_MSG_DISCONNECT` logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.","modified":"2026-07-23T22:30:17.607570792Z","published":"2025-10-27T15:45:54.694Z","upstream":["CVE-2019-17498"],"database_specific":{"license":"CC-BY-4.0","sources":[{"imported":"2026-07-17T20:42:49.729Z","modified":"2026-06-17T02:24:00.503Z","published":"2019-10-21T22:15:10.523Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2019-17498","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2019-17498","database_specific":{"status":"Modified"},"id":"CVE-2019-17498"}]},"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html"},{"type":"WEB","url":"http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html"},{"type":"WEB","url":"https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/"},{"type":"WEB","url":"https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498"},{"type":"WEB","url":"https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480"},{"type":"WEB","url":"https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20220909-0004/"}],"affected":[{"package":{"name":"LibSSH2_jll","ecosystem":"Julia","purl":"pkg:julia/LibSSH2_jll?uuid=29816b5a-b9ab-546f-933c-edad1886dfa8"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.10.1+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-188.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:N/AC:M/Au:N/C:P/I:N/A:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"}]}