FreeBSD : FreeBSD -- Insufficient credential checks in network ioctl(2) (4d87d357-202c-11e3-be06-000c29ee3065)

Medium Nessus Plugin ID 70261


The remote FreeBSD host is missing one or more security-related updates.


Problem Description :

As is commonly the case, the IPv6 and ATM network layer ioctl request handlers are written in such a way that an unrecognized request is passed on unmodified to the link layer, which will either handle it or return an error code.

Network interface drivers, however, assume that the SIOCSIFADDR, SIOCSIFBRDADDR, SIOCSIFDSTADDR and SIOCSIFNETMASK requests have been handled at the network layer, and therefore do not perform input validation or verify the caller's credentials. Typical link-layer actions for these requests may include marking the interface as 'up' and resetting the underlying hardware.

Impact :

An unprivileged user with the ability to run arbitrary code can cause any network interface in the system to perform the link layer actions associated with a SIOCSIFADDR, SIOCSIFBRDADDR, SIOCSIFDSTADDR or SIOCSIFNETMASK ioctl request; or trigger a kernel panic by passing a specially crafted address structure which causes a network interface driver to dereference an invalid pointer.

Although this has not been confirmed, the possibility that an attacker may be able to execute arbitrary code in kernel context can not be ruled out.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 70261

File Name: freebsd_pkg_4d87d357202c11e3be06000c29ee3065.nasl

Version: $Revision: 1.4 $

Type: local

Published: 2013/10/02

Modified: 2016/08/10

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.9

Temporal Score: 6

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

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

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

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2013/09/19

Vulnerability Publication Date: 2013/09/10

Reference Information

CVE: CVE-2013-5691

BID: 62302

OSVDB: 97180

FreeBSD: SA-13:12.ifioctl