CVE-2016-6515
Published: 7 August 2016
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.
Priority
Status
Package | Release | Status |
---|---|---|
openssh Launchpad, Ubuntu, Debian |
precise |
Released
(1:5.9p1-5ubuntu1.10)
|
trusty |
Released
(1:6.6p1-2ubuntu2.8)
|
|
upstream |
Released
(1:7.3p1-1)
|
|
xenial |
Released
(1:7.2p2-4ubuntu2.1)
|
|
yakkety |
Not vulnerable
(1:7.3p1-1)
|
|
zesty |
Not vulnerable
(1:7.3p1-1)
|
|
Patches: upstream: https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |