CVE-2015-6563

6.4 MEDIUM
Published: August 24, 2015 Modified: May 27, 2026
View on NVD

Description

The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.openssh.com/txt/release-7.0
Source: cve@mitre.org
Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2016-0741.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2015/Aug/54
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openssh.com/txt/release-7.0
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://www.openwall.com/lists/oss-security/2015/08/22/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/76317
Source: af854a3a-2127-422b-91ae-364da2661108
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Source: af854a3a-2127-422b-91ae-364da2661108
https://security.gentoo.org/glsa/201512-04
Source: af854a3a-2127-422b-91ae-364da2661108
https://security.netapp.com/advisory/ntap-20180201-0002/
Source: af854a3a-2127-422b-91ae-364da2661108
https://support.apple.com/HT205375
Source: af854a3a-2127-422b-91ae-364da2661108

36 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.4 / 10.0
EPSS (Exploit Probability)
0.4%
31th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

openbsd apple