Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title NetworkManager VPNC plugin: Privilege escalation
Informations
Name GLSA-201808-03 First vendor Publication 2018-08-22
Vendor Gentoo Last vendor Modification 2018-08-22
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:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability in NetworkManager VPNC plugin allows local users to escalate privileges.

Background

NetworkManager is an universal network configuration daemon for laptops, desktops, servers and virtualization hosts.

The VPNC plugin provides easy access Cisco Concentrator based VPN's utilizing NetworkManager.

Description

When initiating a VPNC connection, NetworkManager spawns a new vpnc process and passes the configuration via STDIN. By injecting a special character into a configuration parameter, an attacker can coerce NetworkManager to set the Password helper option to an attacker controlled executable file.

Impact

A local attacker is able to escalate privileges via a specially crafted configuration file.

Workaround

There is no known workaround at this time.

Resolution

All NetworkManager VPNC plugin users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot -v ">=net-misc/networkmanager-vpnc-1.2.6"

References

[ 1 ] CVE-2018-10900 : https://nvd.nist.gov/vuln/detail/CVE-2018-10900

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201808-03

Original Source

Url : http://security.gentoo.org/glsa/glsa-201808-03.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-78 Improper Sanitization of Special Elements used in an OS Command ('OS Command Injection') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 2

Nessus® Vulnerability Scanner

Date Description
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-eb5ea0abaf.nasl - Type : ACT_GATHER_INFO
2018-08-23 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201808-03.nasl - Type : ACT_GATHER_INFO
2018-08-02 Name : The remote Debian host is missing a security update.
File : debian_DLA-1454.nasl - Type : ACT_GATHER_INFO
2018-07-27 Name : The remote Fedora host is missing a security update.
File : fedora_2018-ac02463f82.nasl - Type : ACT_GATHER_INFO
2018-07-24 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4253.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2018-10-02 17:21:38
  • Multiple Updates
2018-08-23 00:18:51
  • First insertion