High severity7.8NVD Advisory· Published Oct 9, 2019· Updated Jun 17, 2026
CVE-2019-16905
CVE-2019-16905
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_x204rna_ecc_firmware:*:*:*:*:*:*:*:*Range: <3.2.7
- cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:*Range: <3.2.7
- OpenSSH/OpenSSHdescription
Patches
Vulnerability mechanics
References
9- cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diffnvdPatch
- ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflownvdExploitThird Party Advisory
- bugzilla.suse.com/show_bug.cginvdIssue TrackingThird Party Advisory
- cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfnvdThird Party Advisory
- cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.cnvdRelease NotesVendor Advisory
- security.gentoo.org/glsa/201911-01nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20191024-0003/nvdThird Party Advisory
- www.openwall.com/lists/oss-security/2019/10/09/1nvdMailing ListThird Party Advisory
- www.openssh.com/releasenotes.htmlnvdRelease Notes
News mentions
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