Executive Summary
Summary | |
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Title | kexec-tools security, bug fix, and enhancement update |
Informations | |||
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Name | RHSA-2012:0152 | First vendor Publication | 2012-02-21 |
Vendor | RedHat | Last vendor Modification | 2012-02-21 |
Severity (Vendor) | Moderate | Revision | 03 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:A/AC:M/Au:N/C:C/I:N/A:N) | |||
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Cvss Base Score | 5.7 | Attack Range | Adjacent network |
Cvss Impact Score | 6.9 | Attack Complexity | Medium |
Cvss Expoit Score | 5.5 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: An updated kexec-tools package that resolves three security issues, fixes several bugs and adds various enhancements is now available for Red Hat Enterprise Linux 5. 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: The kexec-tools package contains the /sbin/kexec binary and utilities that together form the user-space component of the kernel's kexec feature. The /sbin/kexec binary facilitates a new kernel to boot using the kernel's kexec feature either on a normal or a panic reboot. The kexec fastboot mechanism allows booting a Linux kernel from the context of an already running kernel. Kdump used the SSH (Secure Shell) "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps. (CVE-2011-3588) The mkdumprd utility created initrd files with world-readable permissions. A local user could possibly use this flaw to gain access to sensitive information, such as the private SSH key used to authenticate to a remote server when kdump was configured to dump to an SSH target. (CVE-2011-3589) The mkdumprd utility included unneeded sensitive files (such as all files from the "/root/.ssh/" directory and the host's private SSH keys) in the resulting initrd. This could lead to an information leak when initrd files were previously created with world-readable permissions. Note: With this update, only the SSH client configuration, known hosts files, and the SSH key configured via the newly introduced sshkey option in "/etc/kdump.conf" are included in the initrd. The default is the key generated when running the "service kdump propagate" command, "/root/.ssh/kdump_id_rsa". (CVE-2011-3590) Red Hat would like to thank Kevan Carstensen for reporting these issues. This updated kexec-tools package also includes numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 5.8 Technical Notes, linked to in the References, for information on the most significant of these changes. All users of kexec-tools are advised to upgrade to this updated package, which resolves these security issues, fixes these bugs and adds these enhancements. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 662530 - ln: creating symbolic link `/tmp/initrd.ta4308/lib/libc.so.6' to `/lib/power6/libc.so.6': File exists 678308 - kexec kernel crashes due to use of reserved memory range 709622 - Non-portable "while" loop form used 716439 - CVE-2011-3588 CVE-2011-3589 CVE-2011-3590 kexec-tools: Multiple security flaws by management of kdump core files and ramdisk images 748319 - fsck: WARNING: couldn't open /etc/fstab: No such file or directory |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2012-0152.html |
CWE : Common Weakness Enumeration
% | Id | Name |
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100 % | CWE-310 | Cryptographic Issues |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:20599 | |||
Oval ID: | oval:org.mitre.oval:def:20599 | ||
Title: | RHSA-2012:0152: kexec-tools security, bug fix, and enhancement update (Moderate) | ||
Description: | The Red Hat mkdumprd script for kexec-tools, as distributed in the kexec-tools 1.x before 1.102pre-154 and 2.x before 2.0.0-209 packages in Red Hat Enterprise Linux, includes all of root's SSH private keys within a vmcore file, which allows context-dependent attackers to obtain sensitive information by inspecting the file content. | ||
Family: | unix | Class: | patch |
Reference(s): | RHSA-2012:0152-03 CVE-2011-3588 CVE-2011-3589 CVE-2011-3590 | Version: | 28 |
Platform(s): | Red Hat Enterprise Linux 5 | Product(s): | kexec-tools |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:23123 | |||
Oval ID: | oval:org.mitre.oval:def:23123 | ||
Title: | ELSA-2012:0152: kexec-tools security, bug fix, and enhancement update (Moderate) | ||
Description: | The Red Hat mkdumprd script for kexec-tools, as distributed in the kexec-tools 1.x before 1.102pre-154 and 2.x before 2.0.0-209 packages in Red Hat Enterprise Linux, includes all of root's SSH private keys within a vmcore file, which allows context-dependent attackers to obtain sensitive information by inspecting the file content. | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2012:0152-03 CVE-2011-3588 CVE-2011-3589 CVE-2011-3590 | Version: | 17 |
Platform(s): | Oracle Linux 5 | Product(s): | kexec-tools |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:27152 | |||
Oval ID: | oval:org.mitre.oval:def:27152 | ||
Title: | RHSA-2011:1532 -- kexec-tools security, bug fix, and enhancement update (Moderate) | ||
Description: | Kexec allows for booting a Linux kernel from the context of an already running kernel. Kdump used the SSH (Secure Shell) "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps. (CVE-2011-3588) mkdumprd created initrd files with world-readable permissions. A local user could possibly use this flaw to gain access to sensitive information, such as the private SSH key used to authenticate to a remote server when kdump was configured to dump to an SSH target. (CVE-2011-3589) mkdumprd included unneeded sensitive files (such as all files from the "/root/.ssh/" directory and the host's private SSH keys) in the resulting initrd. This could lead to an information leak when initrd files were previously created with world-readable permissions. Note: With this update, only the SSH client configuration, known hosts files, and the SSH key configured via the newly introduced sshkey option in "/etc/kdump.conf" are included in the initrd. The default is the key generated when running the "service kdump propagate" command, "/root/.ssh/kdump_id_rsa". (CVE-2011-3590) Red Hat would like to thank Kevan Carstensen for reporting these issues. This update also fixes several bugs and adds various enhancements. Space precludes documenting all of these changes in this advisory. Documentation for these bug fixes and enhancements will be available shortly from the Technical Notes document, linked to in the References section. All kexec-tools users should upgrade to this updated package, which contains backported patches to resolve these issues and add these enhancements. | ||
Family: | unix | Class: | patch |
Reference(s): | RHSA-2011:1532 CVE-2011-3588 CVE-2011-3589 CVE-2011-3590 | Version: | 3 |
Platform(s): | Red Hat Enterprise Linux 6 | Product(s): | kexec-tools |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:27447 | |||
Oval ID: | oval:org.mitre.oval:def:27447 | ||
Title: | ELSA-2011-1532 -- kexec-tools security, bug fix, and enhancement update (moderate) | ||
Description: | Kdump used the SSH (Secure Shell) "StrictHostKeyChecking=no" option when dumping to SSH targets, causing the target kdump server's SSH host key not to be checked. This could make it easier for a man-in-the-middle attacker on the local network to impersonate the kdump SSH target server and possibly gain access to sensitive information in the vmcore dumps. (CVE-2011-3588) mkdumprd created initrd files with world-readable permissions. A local user could possibly use this flaw to gain access to sensitive information, such as the private SSH key used to authenticate to a remote server when kdump was configured to dump to an SSH target. (CVE-2011-3589) mkdumprd included unneeded sensitive files (such as all files from the "/root/.ssh/" directory and the host's private SSH keys) in the resulting initrd. This could lead to an information leak when initrd files were previously created with world-readable permissions. Note: With this update, only the SSH client configuration, known hosts files, and the SSH key configured via the newly introduced sshkey option in "/etc/kdump.conf" are included in the initrd. The default is the key generated when running the "service kdump propagate" command, "/root/.ssh/kdump_id_rsa". (CVE-2011-3590) | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2011-1532 CVE-2011-3588 CVE-2011-3589 CVE-2011-3590 | Version: | 3 |
Platform(s): | Oracle Linux 6 | Product(s): | kexec-tools |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:27862 | |||
Oval ID: | oval:org.mitre.oval:def:27862 | ||
Title: | DEPRECATED: ELSA-2012-0152 -- kexec-tools security, bug fix, and enhancement update (moderate) | ||
Description: | [1.102pre-154.0.3] - mkdumprd.orig get packed, remove it. [1.102pre-154.0.2] - fix mounting root fs on labeled disk (Maxim Uvarov) [orabug: 13709374] [1.102pre-154.0.1] Merge following patches from mkinitrd: - mkinitrd-fix-san-boot.patch - mkinitrd-fix-shared-lib-library-path.patch - mkinitrd-5.1.19.6-libfirmware-subdir-include.patch - mkinitrd-fix-setquiet-for-non-verbose.patch - add-option-to-forceload-multipath.patch - Update kexec-kdump-howto.txt with Oracle references - Add mkdumprd load firmware support [orabug 10432768] - Updated makedumpfile to el6 version (Herbert van den Bergh) [orabug 10088607] - Merged UEK modification,Updated Source1 kdump.init Added --allow-missing for rebuilding kdump_initrd - Updated kexec-kdump-howto.txt with Oracle references | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2012-0152 CVE-2011-3588 CVE-2011-3589 CVE-2011-3590 | Version: | 4 |
Platform(s): | Oracle Linux 5 | Product(s): | kexec-tools |
Definition Synopsis: | |||
OpenVAS Exploits
Date | Description |
---|---|
2012-07-09 | Name : RedHat Update for kexec-tools RHSA-2011:1532-03 File : nvt/gb_RHSA-2011_1532-03_kexec-tools.nasl |
2012-02-21 | Name : RedHat Update for kexec-tools RHSA-2012:0152-03 File : nvt/gb_RHSA-2012_0152-03_kexec-tools.nasl |
Open Source Vulnerability Database (OSVDB)
Id | Description |
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78053 | kexec-tools mkdumprd initrd File Exposure Weakness |
78052 | kexec-tools mkdumprd initrd Permission Weakness Information Disclosure |
78051 | kexec-tools StrictHostKeyChecking SSH-Parameter MitM Weakness kdump Core Fiel... |
Nessus® Vulnerability Scanner
Date | Description |
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2013-07-12 | Name : The remote Oracle Linux host is missing a security update. File : oraclelinux_ELSA-2012-0152.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20111206_kexec_tools_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20120221_kexec_tools_on_SL5_x.nasl - Type : ACT_GATHER_INFO |
2012-02-21 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0152.nasl - Type : ACT_GATHER_INFO |
2011-12-06 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1532.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2014-02-18 21:25:02 |
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2014-02-17 11:55:40 |
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2014-02-15 17:21:57 |
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