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

medium Nessus Plugin ID 62612

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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.

Solution

Update the affected package.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=790940

http://www.nessus.org/u?51da11ad

Plugin Details

Severity: Medium

ID: 62612

File Name: freebsd_pkg_e11955ca187c11e2be3600215af774f0.nasl

Version: 1.6

Type: local

Published: 10/18/2012

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:xinetd, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 10/17/2012

Vulnerability Publication Date: 2/15/2012

Reference Information

CVE: CVE-2012-0862