RHEL 5 : kernel (RHSA-2011:0429)

medium Nessus プラグイン ID 53399
New! プラグインの深刻度には CVSS v3 が適用されるようになりました。

プラグインの深刻度は、デフォルトで CVSS v3 を使って計算されるように更新されました。プラグインに CVSS v3 スコアがない場合には、CVSS v2 を使って深刻度が計算されます。深刻度の表示設定は、[設定]のドロップダウンで切り替えができます。

概要

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

説明

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important 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 :

* A missing boundary check was found in the dvb_ca_ioctl() function in the Linux kernel's av7110 module. On systems that use old DVB cards that require the av7110 module, a local, unprivileged user could use this flaw to cause a denial of service or escalate their privileges.
(CVE-2011-0521, Important)

* An inconsistency was found in the interaction between the Linux kernel's method for allocating NFSv4 (Network File System version 4) ACL data and the method by which it was freed. This inconsistency led to a kernel panic which could be triggered by a local, unprivileged user with files owned by said user on an NFSv4 share. (CVE-2011-1090, Moderate)

* A NULL pointer dereference flaw was found in the Generic Receive Offload (GRO) functionality in the Linux kernel's networking implementation. If both GRO and promiscuous mode were enabled on an interface in a virtual LAN (VLAN), it could result in a denial of service when a malformed VLAN frame is received on that interface.
(CVE-2011-1478, Moderate)

* A missing security check in the Linux kernel's implementation of the install_special_mapping() function could allow a local, unprivileged user to bypass the mmap_min_addr protection mechanism. (CVE-2010-4346, Low)

* An information leak was found in the Linux kernel's task_show_regs() implementation. On IBM S/390 systems, a local, unprivileged user could use this flaw to read /proc/[PID]/status files, allowing them to discover the CPU register values of processes. (CVE-2011-0710, Low)

* A missing validation check was found in the Linux kernel's mac_partition() implementation, used for supporting file systems created on Mac OS operating systems. A local attacker could use this flaw to cause a denial of service by mounting a disk that contains specially crafted partitions. (CVE-2011-1010, Low)

Red Hat would like to thank Ryan Sweat for reporting CVE-2011-1478;
Tavis Ormandy for reporting CVE-2010-4346; and Timo Warns for reporting CVE-2011-1010.

This update also fixes several bugs. Documentation for these bug fixes will be available shortly from the Technical Notes document linked to in the References section.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs noted in the Technical Notes. The system must be rebooted for this update to take effect.

ソリューション

Update the affected packages.

関連情報

https://access.redhat.com/security/cve/cve-2010-4346

https://access.redhat.com/security/cve/cve-2011-0521

https://access.redhat.com/security/cve/cve-2011-0710

https://access.redhat.com/security/cve/cve-2011-1010

https://access.redhat.com/security/cve/cve-2011-1090

https://access.redhat.com/security/cve/cve-2011-1478

http://www.nessus.org/u?056c0c27

https://access.redhat.com/errata/RHSA-2011:0429

プラグインの詳細

深刻度: Medium

ID: 53399

ファイル名: redhat-RHSA-2011-0429.nasl

バージョン: 1.20

タイプ: local

エージェント: unix

公開日: 2011/4/13

更新日: 2021/1/14

依存関係: ssh_get_info.nasl, linux_alt_patch_detect.nasl

リスク情報

VPR

リスクファクター: Medium

スコア: 5.9

CVSS v2

リスクファクター: Medium

Base Score: 6.9

Temporal Score: 6

ベクトル: AV:L/AC:M/Au:N/C:C/I:C/A:C

現状ベクトル: E:ND/RL:OF/RC:C

脆弱性情報

CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-PAE, p-cpe:/a:redhat:enterprise_linux:kernel-PAE-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-xen, p-cpe:/a:redhat:enterprise_linux:kernel-xen-devel, cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:5.6

必要な KB アイテム: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

エクスプロイトの容易さ: No known exploits are available

パッチ公開日: 2011/4/12

脆弱性公開日: 2010/12/22

参照情報

CVE: CVE-2010-4346, CVE-2011-0521, CVE-2011-0710, CVE-2011-1010, CVE-2011-1090, CVE-2011-1478

BID: 45323, 45986, 46421, 46492, 46766, 47056

RHSA: 2011:0429