OpenSSH < 5.9 Multiple DoS

medium Nessus Network Monitor Plugin ID 701162


The remote SSH server may be affected by multiple denial of service vulnerabilities.


The version of OpenSSH running on the remote host is prior to version 5.9. Such versions are affected by multiple denial of service vulnerabilities:

- A denial of service vulnerability exists in the gss-serv.c 'ssh_gssapi_parse_ename' function. A remote attacker may be able to trigger this vulnerability if gssapi-with-mic is enabled to create a denial of service condition via a large value in a certain length field. (CVE-2011-5000)
- On FreeBSD, NetBSD, OpenBSD, and other products, a remote, authenticated attacker could exploit the remote_glob() and process_put() functions to cause a denial of service (CPU and memory consumption). (CVE-2010-4755)


Upgrade to OpenSSH 5.9 or later.

See Also,,

Plugin Details

Severity: Medium

ID: 701162

Family: SSH

Published: 8/21/2019

Updated: 8/21/2019

Nessus ID: 17703

Risk Information


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:openbsd:openssh

Patch Publication Date: 9/6/2011

Vulnerability Publication Date: 7/7/2010

Reference Information

CVE: CVE-2010-4755, CVE-2011-5000

BID: 54114, 68757