Libssh ssh_packet_kexinit() Double-free Memory DoS

medium Nessus Plugin ID 80556
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Synopsis

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

Description

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.

Solution

Upgrade to libssh 0.6.4 or later.

See Also

http://www.nessus.org/u?54cafa11

https://bugzilla.redhat.com/show_bug.cgi?id=1158089

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

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

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