RHEL 4 : kernel (RHSA-2010:0718)

high Nessus Plugin ID 49744

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue :

* The compat_alloc_user_space() function in the Linux kernel 32/64-bit compatibility layer implementation was missing sanity checks. This function could be abused in other areas of the Linux kernel if its length argument can be controlled from user-space. On 64-bit systems, a local, unprivileged user could use this flaw to escalate their privileges. (CVE-2010-3081, Important)

Red Hat would like to thank Ben Hawkes for reporting this issue.

Refer to Knowledgebase article DOC-40265 for further details:
https://access.redhat.com/kb/docs/DOC-40265

Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/cve-2010-3081

https://access.redhat.com/articles/40258

https://access.redhat.com/errata/RHSA-2010:0718

Plugin Details

Severity: High

ID: 49744

File Name: redhat-RHSA-2010-0718.nasl

Version: 1.36

Type: local

Agent: unix

Published: 10/6/2010

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

VPR

Risk Factor: Critical

Score: 9.6

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:redhat:enterprise_linux:kernel-hugemem, p-cpe:/a:redhat:enterprise_linux:kernel-hugemem-devel, p-cpe:/a:redhat:enterprise_linux:kernel-largesmp, p-cpe:/a:redhat:enterprise_linux:kernel-largesmp-devel, p-cpe:/a:redhat:enterprise_linux:kernel-smp, p-cpe:/a:redhat:enterprise_linux:kernel-smp-devel, p-cpe:/a:redhat:enterprise_linux:kernel-xenU, p-cpe:/a:redhat:enterprise_linux:kernel-xenU-devel, cpe:/o:redhat:enterprise_linux:4, cpe:/o:redhat:enterprise_linux:4.8

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/28/2010

Vulnerability Publication Date: 9/24/2010

Exploitable With

Core Impact

Reference Information

CVE: CVE-2010-3081

BID: 43239

RHSA: 2010:0718