Libssh ssh_packet_kexinit() Double-free Memory DoS

medium Nessus Plugin ID 80556
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote SSH service is affected by a remote denial of service vulnerability.


The remote libssh server contains a double-free memory flaw in the ssh_packet_kexinit() function in kex.c. A remote attacker, with a specially crafted SSH_MSG_KEXINIT packet, can cause a denial of service.


Upgrade to libssh 0.6.4 or later.

See Also

Plugin Details

Severity: Medium

ID: 80556

File Name: libssh_cve-2014-8132.nasl

Version: 1.5

Type: remote

Published: 1/16/2015

Updated: 7/12/2018

Dependencies: ssh_detect.nasl

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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

Vulnerability Information

CPE: cpe:/a:libssh:libssh

Exploit Ease: No known exploits are available

Patch Publication Date: 12/19/2014

Vulnerability Publication Date: 12/19/2014

Reference Information

CVE: CVE-2014-8132

BID: 71865