GLSA-201808-03 : NetworkManager VPNC plugin: Privilege escalation

Medium Nessus Plugin ID 112077


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-201808-03 (NetworkManager VPNC plugin: Privilege escalation)

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.


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

See Also

Plugin Details

Severity: Medium

ID: 112077

File Name: gentoo_GLSA-201808-03.nasl

Version: 1.2

Type: local

Published: 2018/08/23

Modified: 2018/09/04

Dependencies: 12634

Risk Information

Risk Factor: Medium

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:networkmanager-vpnc, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/08/22

Exploitable With

Metasploit (Network Manager VPNC Username Privilege Escalation)

Reference Information

CVE: CVE-2018-10900

GLSA: 201808-03