GLSA-201808-03 : NetworkManager VPNC plugin: Privilege escalation
Medium Nessus Plugin ID 112077
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe 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.
A local attacker is able to escalate privileges via a specially crafted configuration file.
There is no known workaround at this time.
SolutionAll NetworkManager VPNC plugin users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/networkmanager-vpnc-1.2.6'