Debian DSA-1011-1 : kernel-patch-vserver - missing attribute support

high Nessus Plugin ID 22553

Synopsis

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

Description

Several vulnerabilities have been discovered in the Debian vserver support for Linux. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2005-4347 Bjorn Steinbrink discovered that the chroot barrier is not set correctly with util-vserver which may result in unauthorised escapes from a vserver to the host system.

This vulnerability is limited to the 2.4 kernel patch included in kernel-patch-vserver. The correction to this problem requires updating the util-vserver package as well and installing a new kernel built from the updated kernel-patch-vserver package.

- CVE-2005-4418 The default policy of util-vserver is set to trust all unknown capabilities instead of considering them as insecure.

Solution

Upgrade the util-vserver and kernel-patch-vserver packages and build a new kernel immediately.

The old stable distribution (woody) does not contain a kernel-patch-vserver package.

For the stable distribution (sarge) this problem has been fixed in version 1.9.5.5 of kernel-patch-vserver and in version 0.30.204-5sarge3 of util-vserver.

Plugin Details

Severity: High

ID: 22553

File Name: debian_DSA-1011.nasl

Version: 1.20

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/14/2006

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:3.1, p-cpe:/a:debian:debian_linux:util-vserver, p-cpe:/a:debian:debian_linux:kernel-patch-vserver

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

Patch Publication Date: 3/21/2005

Vulnerability Publication Date: 3/21/2005

Reference Information

CVE: CVE-2005-4347, CVE-2005-4418

DSA: 1011

Detections

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