CVE-2015-5600
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 9.4%
exploitation probability
9.4%top 5% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · n/aReferences
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.chttp://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.c.diff?r1=1.42&r2=1.43&f=hhttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10697http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-July/162955.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.htmlhttp://openwall.com/lists/oss-security/2015/07/23/4http://rhn.redhat.com/errata/RHSA-2016-0466.htmlhttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfhttp://seclists.org/fulldisclosure/2015/Jul/92https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04952480