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Debian DSA-438-1 : linux-kernel-2.4.18-alpha+i386+powerpc - missing function return value check

high Nessus Plugin ID 15275

Synopsis

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

Description

Paul Starzetz and Wojciech Purczynski of isec.pl discovered a critical security vulnerability in the memory management code of Linux inside the mremap(2) system call. Due to missing function return value check of internal functions a local attacker can gain root privileges.

Solution

Upgrade the Linux kernel packages immediately.

For the stable distribution (woody) this problem has been fixed in version 2.4.18-14.2 of kernel-source, version 2.4.18-14 of alpha images, version 2.4.18-12.2 of i386 images, version 2.4.18-5woody7 of i386bf images and version 2.4.18-1woody4 of powerpc images.

Other architectures will probably mentioned in a separate advisory or are not affected (m68k).

This problem is also fixed in the upstream version of Linux 2.4.25 and 2.6.3.

 Vulnerability matrix for CAN-2004-0077

See Also

http://isec.pl/vulnerabilities/isec-0014-mremap-unmap.txt

http://www.debian.org/security/2004/dsa-438

Plugin Details

Severity: High

ID: 15275

File Name: debian_DSA-438.nasl

Version: 1.29

Type: local

Agent: unix

Published: 9/29/2004

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:kernel-image-2.4.18-1-alpha, p-cpe:/a:debian:debian_linux:kernel-image-2.4.18-1-i386, p-cpe:/a:debian:debian_linux:kernel-image-2.4.18-i386bf, p-cpe:/a:debian:debian_linux:kernel-patch-2.4.18-powerpc, p-cpe:/a:debian:debian_linux:kernel-source-2.4.18, cpe:/o:debian:debian_linux:3.0

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: 2/18/2004

Reference Information

CVE: CVE-2004-0077

BID: 9686

CERT: 981222

DSA: 438