High severity8.1NVD Advisory· Published Aug 3, 2015· Updated Jun 17, 2026
CVE-2015-5600
CVE-2015-5600
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
24- osv-coords22 versionspkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP3pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATApkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP3pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP3pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATApkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP3pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012
< 6.2p2-0.21.3+ 21 more
- (no CPE)range: < 6.2p2-0.21.3
- (no CPE)range: < 6.6p1-13.3
- (no CPE)range: < 6.6p1-29.1
- (no CPE)range: < 5.1p1-41.69.4
- (no CPE)range: < 6.2p2-0.21.3
- (no CPE)range: < 6.2p2-0.21.3
- (no CPE)range: < 6.6p1-13.3
- (no CPE)range: < 6.6p1-29.1
- (no CPE)range: < 6.2p2-0.21.3
- (no CPE)range: < 6.6p1-13.3
- (no CPE)range: < 6.6p1-29.1
- (no CPE)range: < 6.2p2-0.21.1
- (no CPE)range: < 6.6p1-13.1
- (no CPE)range: < 6.6p1-29.1
- (no CPE)range: < 5.1p1-41.69.1
- (no CPE)range: < 6.2p2-0.21.1
- (no CPE)range: < 6.2p2-0.21.1
- (no CPE)range: < 6.6p1-13.1
- (no CPE)range: < 6.6p1-29.1
- (no CPE)range: < 6.2p2-0.21.1
- (no CPE)range: < 6.6p1-13.1
- (no CPE)range: < 6.6p1-29.1
Patches
Vulnerability mechanics
References
33- seclists.org/fulldisclosure/2015/Jul/92nvdExploit
- cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.cnvd
- cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.c.diffnvd
- kb.juniper.net/InfoCenter/indexnvd
- lists.apple.com/archives/security-announce/2015/Aug/msg00001.htmlnvd
- lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.htmlnvd
- lists.fedoraproject.org/pipermail/package-announce/2015-July/162955.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.htmlnvd
- openwall.com/lists/oss-security/2015/07/23/4nvd
- rhn.redhat.com/errata/RHSA-2016-0466.htmlnvd
- www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlnvd
- www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.htmlnvd
- www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.htmlnvd
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlnvd
- www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlnvd
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlnvd
- www.securityfocus.com/bid/75990nvd
- www.securityfocus.com/bid/91787nvd
- www.securityfocus.com/bid/92012nvd
- www.securitytracker.com/id/1032988nvd
- www.ubuntu.com/usn/USN-2710-1nvd
- www.ubuntu.com/usn/USN-2710-2nvd
- cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfnvd
- h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplaynvd
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplaynvd
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplaynvd
- kc.mcafee.com/corporate/indexnvd
- kc.mcafee.com/corporate/indexnvd
- lists.debian.org/debian-lts-announce/2018/09/msg00010.htmlnvd
- security.gentoo.org/glsa/201512-04nvd
- security.netapp.com/advisory/ntap-20151106-0001/nvd
- support.apple.com/kb/HT205031nvd
- www.arista.com/en/support/advisories-notices/security-advisories/1174-security-advisory-12nvd
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