FreeBSD : xinetd -- attackers can bypass access restrictions if tcpmux-servers service enabled (e11955ca-187c-11e2-be36-00215af774f0)

This script is Copyright (C) 2012-2013 Tenable Network Security, Inc.

Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

Thomas Swan reports :

xinetd allows for services to be configured with the TCPMUX or
TCPMUXPLUS service types, which makes those services available on port
1, as per RFC 1078 [1], if the tcpmux-server service is enabled. When
the tcpmux-server service is enabled, xinetd would expose _all_
enabled services via the tcpmux port, instead of just the configured
service(s). This could allow a remote attacker to bypass firewall
restrictions and access services via the tcpmux port.

See also :

Solution :

Update the affected package.

Risk factor :

Medium / CVSS Base Score : 4.3

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 62612 ()

Bugtraq ID:

CVE ID: CVE-2012-0862

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