Detections
Analytics
RHEL 6 : kernel (RHSA-2011:1530)
medium Nessus Plugin ID 57012
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Synopsis
The remote Red Hat host is missing one or more security updates.Description
Updated kernel packages that fix multiple security issues, address several hundred bugs and add numerous enhancements are now available as part of the ongoing support and maintenance of Red Hat Enterprise Linux version 6. This is the second regular update.The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
The kernel packages contain the Linux kernel, the core of any Linux operating system.
This update fixes the following security issues :
* The proc file system could allow a local, unprivileged user to obtain sensitive information or possibly cause integrity issues.
(CVE-2011-1020, Moderate)
* Non-member VLAN (virtual LAN) packet handling for interfaces in promiscuous mode and also using the be2net driver could allow an attacker on the local network to cause a denial of service.
(CVE-2011-3347, Moderate)
* A flaw was found in the Linux kernel in the way splitting two extents in ext4_ext_convert_to_initialized() worked. A local, unprivileged user with access to mount and unmount ext4 file systems could use this flaw to cause a denial of service. (CVE-2011-3638, Moderate)
* A NULL pointer dereference flaw was found in the way the Linux kernel's key management facility handled user-defined key types. A local, unprivileged user could use the keyctl utility to cause a denial of service. (CVE-2011-4110, Moderate)
Red Hat would like to thank Kees Cook for reporting CVE-2011-1020;
Somnath Kotur for reporting CVE-2011-3347; and Zheng Liu for reporting CVE-2011-3638.
This update also fixes several hundred bugs and adds enhancements.
Refer to the Red Hat Enterprise Linux 6.2 Release Notes for information on the most significant of these changes, and the Technical Notes for further information, both linked to in the References.
All Red Hat Enterprise Linux 6 users are advised to install these updated packages, which correct these issues, and fix the bugs and add the enhancements noted in the Red Hat Enterprise Linux 6.2 Release Notes and Technical Notes. 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-2011-1020
https://access.redhat.com/security/cve/cve-2011-3347
https://access.redhat.com/security/cve/cve-2011-3638
https://access.redhat.com/security/cve/cve-2011-4110
http://www.nessus.org/u?648c0194
Plugin Details
Severity: Medium
ID: 57012
File Name: redhat-RHSA-2011-1530.nasl
Version: 1.23
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 12/6/2011
Updated: 1/14/2021
Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.6
Vector: CVSS2#AV:A/AC:H/Au:N/C:N/I:N/A:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-i686, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-s390x, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-x86_64, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:redhat:enterprise_linux:kernel-firmware, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:perf-debuginfo, p-cpe:/a:redhat:enterprise_linux:python-perf, cpe:/o:redhat:enterprise_linux:6
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: 12/6/2011
Vulnerability Publication Date: 2/28/2011
Reference Information
CVE: CVE-2011-1020, CVE-2011-3347, CVE-2011-3638, CVE-2011-4110
RHSA: 2011:1530