CVE-2019-16905

Published Oct 9, 2019

Last updated 2 years ago

Overview

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
cve@mitre.org
NVD status
Analyzed

Risk scores

CVSS 3.1

Type
Primary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

CVSS 2.0

Type
Primary
Base score
4.4
Impact score
6.4
Exploitability score
3.4
Vector string
AV:L/AC:M/Au:N/C:P/I:P/A:P

Weaknesses

nvd@nist.gov
CWE-190

Social media

Hype score
Not currently trending

Configurations