CVE-2019-16905

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2019-16905
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-10-09 20:15:23 UTC
Updated2026-10-14 07:16:48 UTC
DescriptionOpenSSH 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-190 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary4.4AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:L/AC:M/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Netapp Cloud Backup - All All All
Application Netapp Steelstore Cloud Integrated Storage - All All All
Application Openbsd Openssh All All All All
Application Openbsd Openssh All All All All
Hardware Siemens Scalance X204rna - All All All
Hardware Siemens Scalance X204rna Ecc - All All All
Operating System Siemens Scalance X204rna Ecc Firmware All All All All
Operating System Siemens Scalance X204rna Firmware All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
Bug 1153537 – VUL-1: CVE-2019-16905: openssh: 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 af854a3a-2127-422b-91ae-364da2661108 bugzilla.suse.com Issue Tracking, Third Party Advisory
oss-security - Announce: OpenSSH 8.1 released af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
src/usr.bin/ssh/sshkey-xmss.c - diff - 1.6 af854a3a-2127-422b-91ae-364da2661108 cvsweb.openbsd.org Patch
SSD Advisory - OpenSSH Pre-Auth XMSS Integer Overflow - SSD Secure Disclosure af854a3a-2127-422b-91ae-364da2661108 ssd-disclosure.com Exploit, Third Party Advisory
OpenSSH: Integer overflow (GLSA 201911-01) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
CVE-2019-16905 OpenSSH Pre-Auth Integer Overflow Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
CVS log for src/usr.bin/ssh/sshkey-xmss.c af854a3a-2127-422b-91ae-364da2661108 cvsweb.openbsd.org Release Notes, Vendor Advisory
cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-412672.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
OpenSSH: Release Notes af854a3a-2127-422b-91ae-364da2661108 www.openssh.com Release Notes
MISC:https://0day.life/exploits/0day-1009.html MITRE 0day.life
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 591280 Siemens SCALANCE X-200RNA Switch Devices Denial of Service (DoS) Multiple Vulnerabilities (ICSA-22-349-21, SSA-412672)
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 710122 Gentoo Linux OpenSSH Integer overflow Vulnerability (GLSA 201911-01)
  • 900092 CBL-Mariner Linux Security Update for openssh 8.0p1
  • 902866 Common Base Linux Mariner (CBL-Mariner) Security Update for openssh (2523)

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report