National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-16905 Detail

Current 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.8 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://0day.life/exploits/0day-1009.html Exploit Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1153537 Issue Tracking Third Party Advisory
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c 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
https://security.netapp.com/advisory/ntap-20191024-0003/
https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow
https://www.openssh.com/releasenotes.html Release Notes
https://www.openwall.com/lists/oss-security/2019/10/09/1 Mailing List Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-190 Integer Overflow or Wraparound NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
7.7
Up to (including)
7.9
 cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
8.0
Up to (excluding)
8.1


Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-16905
NVD Published Date:
10/09/2019
NVD Last Modified:
10/22/2019