CVE-2019-16905

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2019-16905
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.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://bugzilla.suse.com/show_bug.cgi?id=1153537 Issue Tracking Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf Third Party Advisory
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c Release Notes Vendor Advisory
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h Patch
https://security.gentoo.org/glsa/201911-01 Third Party Advisory
https://security.netapp.com/advisory/ntap-20191024-0003/ Third Party Advisory
https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow Exploit Third Party Advisory
https://www.openssh.com/releasenotes.html Release Notes
https://www.openwall.com/lists/oss-security/2019/10/09/1 Mailing List Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1153537 Issue Tracking Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf Third Party Advisory
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c Release Notes Vendor Advisory
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h Patch
https://security.gentoo.org/glsa/201911-01 Third Party Advisory
https://security.netapp.com/advisory/ntap-20191024-0003/ Third Party Advisory
https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow Exploit Third Party Advisory
https://www.openssh.com/releasenotes.html Release Notes
https://www.openwall.com/lists/oss-security/2019/10/09/1 Mailing List Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:scalance_x204rna:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:siemens:scalance_x204rna_ecc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:scalance_x204rna_ecc:-:*:*:*:*:*:*:*
History

23 Apr 2025, 16:15

Type Values Removed Values Added
References
  • {'url': 'https://0day.life/exploits/0day-1009.html', 'tags': ['Exploit', 'Third Party Advisory'], 'source': 'af854a3a-2127-422b-91ae-364da2661108'}
Information

Published : 2019-10-09 20:15

Updated : 2025-04-23 16:15

NVD link : CVE-2019-16905

Mitre link : CVE-2019-16905

CVE.ORG link : CVE-2019-16905

JSON object : View

Products Affected

netapp

  • steelstore_cloud_integrated_storage
  • cloud_backup

openbsd

  • openssh

siemens

  • scalance_x204rna_firmware
  • scalance_x204rna_ecc_firmware
  • scalance_x204rna
  • scalance_x204rna_ecc
CWE
CWE-190

Integer Overflow or Wraparound