Debian DLA-325-1 : linux-2.6 security update

medium Nessus Plugin ID 86357
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Synopsis

The remote Debian host is missing a security update.

Description

This update fixes the CVEs described below.

CVE-2015-2925

Jann Horn discovered that when a subdirectory of a filesystem was bind-mounted into a chroot or mount namespace, a user that should be confined to that chroot or namespace could access the whole of that filesystem if they had write permission on an ancestor of the subdirectory. This is not a common configuration for this kernel version.

CVE-2015-5257

Moein Ghasemzadeh of Istuary Innovation Labs reported that a USB device could cause a denial of service (crash) by imitating a Whiteheat USB serial device but presenting a smaller number of endpoints.

CVE-2015-7613

Dmitry Vyukov discovered that System V IPC objects (message queues and shared memory segments) were made accessible before their ownership and other attributes were fully initialised. If a local user can race against another user or service creating a new IPC object, this may result in unauthorised information disclosure, unauthorised information modification, denial of service and/or privilege escalation.

A similar issue existed with System V semaphore arrays, but was less severe because they were always cleared before being fully initialised.

For the oldoldstable distribution (squeeze), these problems have been fixed in version 2.6.32-48squeeze16.

For the oldstable distribution (wheezy), these problems will be fixed in version 3.2.68-1+deb7u5.

For the stable distribution (jessie), these problems will be fixed in version 3.16.7-ckt11-1+deb8u5 or have been fixed earlier.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2015/10/msg00003.html

https://packages.debian.org/source/squeeze-lts/linux-2.6

Plugin Details

Severity: Medium

ID: 86357

File Name: debian_DLA-325.nasl

Version: 2.14

Type: local

Agent: unix

Published: 10/13/2015

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:firmware-linux-free, p-cpe:/a:debian:debian_linux:linux-base, p-cpe:/a:debian:debian_linux:linux-doc-2.6.32, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-486, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-686, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-686-bigmem, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-all, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-all-amd64, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-all-i386, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-amd64, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-common, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-common-openvz, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-common-vserver, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-common-xen, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-openvz-686, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-openvz-amd64, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-vserver-686, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-vserver-686-bigmem, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-vserver-amd64, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-xen-686, p-cpe:/a:debian:debian_linux:linux-headers-2.6.32-5-xen-amd64, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-486, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-686, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-686-bigmem, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-686-bigmem-dbg, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-amd64, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-amd64-dbg, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-openvz-686, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-openvz-686-dbg, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-openvz-amd64, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-openvz-amd64-dbg, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-vserver-686, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-vserver-686-bigmem, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-vserver-686-bigmem-dbg, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-vserver-amd64, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-vserver-amd64-dbg, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-xen-686, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-xen-686-dbg, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-xen-amd64, p-cpe:/a:debian:debian_linux:linux-image-2.6.32-5-xen-amd64-dbg, p-cpe:/a:debian:debian_linux:linux-libc-dev, p-cpe:/a:debian:debian_linux:linux-manual-2.6.32, p-cpe:/a:debian:debian_linux:linux-patch-debian-2.6.32, p-cpe:/a:debian:debian_linux:linux-source-2.6.32, p-cpe:/a:debian:debian_linux:linux-support-2.6.32-5, p-cpe:/a:debian:debian_linux:linux-tools-2.6.32, p-cpe:/a:debian:debian_linux:xen-linux-system-2.6.32-5-xen-686, p-cpe:/a:debian:debian_linux:xen-linux-system-2.6.32-5-xen-amd64, cpe:/o:debian:debian_linux:6.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/12/2015

Reference Information

CVE: CVE-2015-2925, CVE-2015-5257, CVE-2015-7613

BID: 73926