漏洞描述
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
影响产品
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
support.hpe.comhttps://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us↗security.netapp.comhttps://security.netapp.com/advisory/ntap-20171130-0003/↗cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf↗www.securitytracker.comhttp://www.securitytracker.com/id/1036487↗openwall.comhttp://openwall.com/lists/oss-security/2016/08/01/2↗github.comhttps://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97↗lists.debian.orghttps://lists.debian.org/debian-lts-announce/2018/09/msg00010.html↗www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html↗cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf↗packetstormsecurity.comhttp://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html↗www.securityfocus.comhttp://www.securityfocus.com/bid/92212↗lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2017:2029↗security.freebsd.orghttps://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc↗