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Vulnerability details: VCID-tm64-u4gu-aaaa
Vulnerability ID VCID-tm64-u4gu-aaaa
Aliases CVE-2015-6563
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-20 Improper Input Validation
CWE-266 Incorrect Privilege Assignment
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-6563.html
rhas Moderate https://access.redhat.com/errata/RHSA-2015:2088
rhas Moderate https://access.redhat.com/errata/RHSA-2016:0741
generic_textual Medium https://anongit.mindrot.org/openssh.git/commit/?id=d4697fe9a28dab7255c60433e4dd23cf7fce8a8b
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
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epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
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epss 0.00151 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
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epss 0.00151 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
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epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
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epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
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epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
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epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
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epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
epss 0.03104 https://api.first.org/data/v1/epss?cve=CVE-2015-6563
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1252844
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6563
generic_textual Medium http://seclists.org/fulldisclosure/2015/Aug/54
generic_textual Medium https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b
cvssv2 1.9 https://nvd.nist.gov/vuln/detail/CVE-2015-6563
generic_textual Medium https://ubuntu.com/security/notices/USN-2710-1
generic_textual Medium http://www.openssh.com/txt/release-7.0
generic_textual Medium http://www.openwall.com/lists/oss-security/2015/08/11/9
generic_textual Medium http://www.openwall.com/lists/oss-security/2015/08/22/1
cvssv3.1 6.5 http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
generic_textual HIGH http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
cvssv3.1 8.8 http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
generic_textual HIGH http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
generic_textual HIGH http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
Reference id Reference type URL
http://lists.apple.com/archives/security-announce/2015/Oct/msg00005.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html
http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-6563.html
http://rhn.redhat.com/errata/RHSA-2016-0741.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-6563.json
https://anongit.mindrot.org/openssh.git/commit/?id=d4697fe9a28dab7255c60433e4dd23cf7fce8a8b
https://api.first.org/data/v1/epss?cve=CVE-2015-6563
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6563
http://seclists.org/fulldisclosure/2015/Aug/54
https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
https://security.gentoo.org/glsa/201512-04
https://security.netapp.com/advisory/ntap-20180201-0002/
https://support.apple.com/HT205375
https://ubuntu.com/security/notices/USN-2710-1
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-766
http://www.openssh.com/txt/release-7.0
http://www.openwall.com/lists/oss-security/2015/08/11/9
http://www.openwall.com/lists/oss-security/2015/08/22/1
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/76317
1252844 https://bugzilla.redhat.com/show_bug.cgi?id=1252844
795711 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=795711
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
CVE-2015-6563 https://nvd.nist.gov/vuln/detail/CVE-2015-6563
RHSA-2015:2088 https://access.redhat.com/errata/RHSA-2015:2088
RHSA-2016:0741 https://access.redhat.com/errata/RHSA-2016:0741
No exploits are available.
Vector: AV:L/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2015-6563
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.10982
EPSS Score 0.00044
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.