{"id":"CVE-2019-17498","revision":null,"records":[{"revision":"bb9db8c120124da9a413334f17fc09a4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2019-17498","aliases":[],"title":"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 serv…","description":"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.","state":0,"publishedAt":"2019-10-21T00:00:00+00:00","modifiedAt":"2026-10-14T06:54:44.821+00:00","affected":[{"ecosystem":"Vendor product","name":"n/a","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n/a\",\n                    \"product\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"version\": \"n/a\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480","https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/","https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/","http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html","https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/","https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c","https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html","https://security.netapp.com/advisory/ntap-20220909-0004/","http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html","https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2019-17498","license":"CVE Program Terms of Use","key":"cve-program:CVE-2019-17498","identifiers":["CVE-2019-17498"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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