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.
Published: 2015-08-24
Score: 6.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-1500-1 openssh security update
EUVD EUVD EUVD-2015-6502 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.
History

Wed, 27 May 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Apple Mac Os X
Openbsd Openssh
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-27T16:11:52.468Z

Reserved: 2015-08-21T00:00:00.000Z

Link: CVE-2015-6563

cve-icon Vulnrichment

Updated: 2024-08-06T07:22:22.366Z

cve-icon NVD

Status : Modified

Published: 2015-08-24T01:59:00.127

Modified: 2026-06-17T00:31:03.787

Link: CVE-2015-6563

cve-icon Redhat

Severity : Moderate

Publid Date: 2015-08-11T00:00:00Z

Links: CVE-2015-6563 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses