Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us ↗
- https://security.netapp.com/advisory/ntap-20171130-0003/ ↗
- https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97 ↗
- http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html ↗
- https://www.exploit-db.com/exploits/40888/ ↗
- http://www.securityfocus.com/bid/92212 ↗
- https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc ↗
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html ↗
- http://www.securitytracker.com/id/1036487 ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/ ↗
- https://access.redhat.com/errata/RHSA-2017:2029 ↗
- https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html ↗
- http://openwall.com/lists/oss-security/2016/08/01/2 ↗
- https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf ↗
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf ↗