Executive Summary

Summary
Title libssh Authentication Bypass Vulnerability Affecting Cisco Products: October 2018
Informations
Name cisco-sa-20181019-libssh First vendor Publication 2018-10-19
Vendor Cisco Last vendor Modification 2018-10-19
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:N)
Cvss Base Score 6.4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A vulnerability in libssh could allow an unauthenticated, remote attacker to bypass authentication on a targeted system.

The vulnerability is due to improper authentication operations by the server-side state machine of the affected software. An attacker could exploit this vulnerability by presenting a SSH2_MSG_USERAUTH_SUCCESS message to a targeted system. A successful exploit could allow the attacker to bypass authentication and gain unauthorized access to a targeted system.

This advisory will be updated as additional information becomes available.

This advisory is available at the following link:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181019-libssh ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181019-libssh"]

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Original Source

Url : http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco (...)

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 15
Application 2
Application 1
Application 1
Application 1
Application 1
Os 4
Os 2
Os 1

SAINT Exploits

Description Link
libssh authentication bypass More info here

Nessus® Vulnerability Scanner

Date Description
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-6b390ceb36.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-c08cd808d3.nasl - Type : ACT_GATHER_INFO
2018-10-22 Name : The remote Fedora host is missing a security update.
File : fedora_2018-bca1c1ab49.nasl - Type : ACT_GATHER_INFO
2018-10-19 Name : The remote Debian host is missing a security update.
File : debian_DLA-1548.nasl - Type : ACT_GATHER_INFO
2018-10-18 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4322.nasl - Type : ACT_GATHER_INFO
2018-10-18 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_2383767cd22411e89623a4badb2f4699.nasl - Type : ACT_GATHER_INFO
2018-10-17 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2018-289-01.nasl - Type : ACT_GATHER_INFO
2018-10-17 Name : The remote server is vulnerable to an authentication bypass.
File : libssh_0_8_4.nasl - Type : ACT_GATHER_INFO
2018-10-17 Name : The remote server is vulnerable to an authentication bypass.
File : libssh_0_8_4_remote.nasl - Type : ACT_ATTACK

Alert History

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0
Date Informations
2018-10-20 09:18:35
  • First insertion