{"id":"CVE-2019-16905","state":"PUBLISHED","title":"OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a craf","description":"OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.","publishedAt":"2019-10-09T00:00:00.000Z","updatedAt":"2026-10-14T06:54:43.458Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://www.openssh.com/releasenotes.html","https://www.openwall.com/lists/oss-security/2019/10/09/1","https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h","https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c","https://bugzilla.suse.com/show_bug.cgi?id=1153537","https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow","https://security.netapp.com/advisory/ntap-20191024-0003/","https://security.gentoo.org/glsa/201911-01","https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf","https://cert-portal.siemens.com/productcert/html/ssa-412672.html","https://cert-portal.siemens.com/productcert/html/ssa-398330.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:45:36.262Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2019/16xxx/CVE-2019-16905.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2019-16905","state":"PUBLISHED","datePublished":"2019-10-09T00:00:00.000Z","dateUpdated":"2026-10-14T06:54:43.458Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2019-09-26T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://www.openssh.com/releasenotes.html"},{"url":"https://www.openwall.com/lists/oss-security/2019/10/09/1"},{"url":"https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h"},{"url":"https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c"},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1153537"},{"url":"https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow"},{"url":"https://security.netapp.com/advisory/ntap-20191024-0003/"},{"url":"https://security.gentoo.org/glsa/201911-01","name":"GLSA-201911-01","tags":["vendor-advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2025-04-17T20:59:26.573Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.openssh.com/releasenotes.html","tags":["x_transferred"]},{"url":"https://www.openwall.com/lists/oss-security/2019/10/09/1","tags":["x_transferred"]},{"url":"https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h","tags":["x_transferred"]},{"url":"https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c","tags":["x_transferred"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1153537","tags":["x_transferred"]},{"url":"https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20191024-0003/","tags":["x_transferred"]},{"url":"https://security.gentoo.org/glsa/201911-01","name":"GLSA-201911-01","tags":["vendor-advisory","x_transferred"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-04-23T15:45:01.432Z"}},{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-412672.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-14T06:54:43.458Z"},"x_adpType":"supplier"}]}}}