High severity · published Aug 7, 2016
CVE-2016-6515
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…
7.5
CVSS
58.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)58.6% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
24 · source: NVD
OP
Openssh · Openbsd
through 7.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6515
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-6515
Third Party Advisory
http://openwall.com/lists/oss-security/2016/08/01/2
packetstormsecurity.com
http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html
www.oracle.com
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
www.securityfocus.com
http://www.securityfocus.com/bid/92212
www.securitytracker.com
http://www.securitytracker.com/id/1036487
access.redhat.com
https://access.redhat.com/errata/RHSA-2017:2029
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