National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2015-5600 Detail

Description

The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service (CPU consumption) via a long and duplicative list in the ssh -oKbdInteractiveDevices option, as demonstrated by a modified client that provides a different password for each pam element on this list.

Source:  MITRE
Description Last Modified:  08/02/2015

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 8.5 HIGH
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:C) (V2 legend)
Impact Subscore: 7.8
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.c
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.c.diff?r1=1.42&r2=1.43&f=h
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10697
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162955.html
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html
http://openwall.com/lists/oss-security/2015/07/23/4
http://rhn.redhat.com/errata/RHSA-2016-0466.html
http://seclists.org/fulldisclosure/2015/Jul/92 Exploit
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/bid/75990
http://www.securityfocus.com/bid/91787
http://www.securityfocus.com/bid/92012
http://www.securitytracker.com/id/1032988
http://www.ubuntu.com/usn/USN-2710-1
http://www.ubuntu.com/usn/USN-2710-2
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04952480
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05128992
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157667
https://kc.mcafee.com/corporate/index?page=content&id=SB10136
https://kc.mcafee.com/corporate/index?page=content&id=SB10157
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
https://security.gentoo.org/glsa/201512-04
https://security.netapp.com/advisory/ntap-20151106-0001/
https://support.apple.com/kb/HT205031

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*    versions up to (including) 6.9

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

24 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-5600
NVD Published Date:
08/02/2015
NVD Last Modified:
09/11/2018