Debian DSA-2769-1 : kfreebsd-9 - privilege escalation/denial of service

medium Nessus Plugin ID 70353

Language:

Synopsis

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

Description

Several vulnerabilities have been discovered in the FreeBSD kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2013-5691 Loganaden Velvindron and Gleb Smirnoff discovered that the SIOCSIFADDR, SIOCSIFBRDADDR, SIOCSIFDSTADDR and SIOCSIFNETMASK ioctl requests do not perform input validation or verify the caller's credentials.
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 the above ioctl requests or trigger a kernel panic by passing a specially crafted address structure which causes a network interface driver to dereference an invalid pointer.

- CVE-2013-5710 Konstantin Belousov discovered that the nullfs(5) implementation of the VOP_LINK(9) VFS operation does not check whether the source and target of the link are both in the same nullfs instance. It is therefore possible to create a hardlink from a location in one nullfs instance to a file in another, as long as the underlying (source) filesystem is the same. If multiple nullfs views into the same filesystem are mounted in different locations, a user may gain write access to files which are nominally on a read-only filesystem.

Solution

Upgrade the kfreebsd-9 packages.

For the stable distribution (wheezy), these problems have been fixed in version 9.0-10+deb70.4.

Plugin Details

Severity: Medium

ID: 70353

File Name: debian_DSA-2769.nasl

Version: 1.8

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/10/2013

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:kfreebsd-9, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 10/8/2013

Reference Information

CVE: CVE-2013-5691, CVE-2013-5710

BID: 62302, 62303

DSA: 2769

Detections

Analytics