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Debian DSA-047-1 : kernel

high Nessus Plugin ID 38953

Synopsis

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

Description

The kernels used in Debian GNU/Linux 2.2 have been found to have multiple security problems. This is a list of problems based on the 2.2.19 release notes as found on http://www.linux.org.uk/ :

 - binfmt_misc used user pages directly
 - the CPIA driver had an off-by-one error in the buffer code which made it possible for users to write into kernel memory

 - the CPUID and MSR drivers had a problem in the module unloading code which could cause a system crash if they were set to automatically load and unload (please note that Debian does not automatically unload kernel modules)

 - There was a possible hang in the classifier code

 - The getsockopt and setsockopt system calls did not handle sign bits correctly which made a local DoS and other attacks possible

 - The sysctl system call did not handle sign bits correctly which allowed a user to write in kernel memory

 - ptrace/exec races that could give a local user extra privileges

 - possible abuse of a boundary case in the sockfilter code

 - SYSV shared memory code could overwrite recently freed memory which might cause problems

 - The packet length checks in the masquerading code were a bit lax (probably not exploitable)

 - Some x86 assembly bugs caused the wrong number of bytes to be copied.

 - A local user could deadlock the kernel due to bugs in the UDP port allocation.

Solution

All these problems are fixed in the 2.2.19 kernel, and it is highly recommend that you upgrade machines to this kernel.


Please note that kernel upgrades are not done automatically. You will have to explicitly tell the packaging system to install the right kernel for your system.

See Also

http://www.linux.org.uk/

http://www.debian.org/security/2001/dsa-047

Plugin Details

Severity: High

ID: 38953

File Name: debian_DSA-047.nasl

Version: 1.23

Type: local

Agent: unix

Published: 9/29/2004

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:various%2520kernel%2520packages, cpe:/o:debian:debian_linux:2.2

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/16/2001

Vulnerability Publication Date: 2/9/2001

Reference Information

CVE: CVE-2001-0316, CVE-2001-1390, CVE-2001-1391, CVE-2001-1392, CVE-2001-1393, CVE-2001-1394, CVE-2001-1395, CVE-2001-1396, CVE-2001-1397, CVE-2001-1398, CVE-2001-1399, CVE-2001-1400

BID: 2529

DSA: 047