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This script is Copyright (C) 2012-2014 Tenable Network Security, Inc.
The remote Scientific Linux host is missing one or more security
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)
This updated kexec-tools package also includes numerous bug fixes and
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.
See also :
Update the affected kexec-tools and / or kexec-tools-debuginfo
Risk factor :
Medium / CVSS Base Score : 5.7
Family: Scientific Linux Local Security Checks
Nessus Plugin ID: 61265 ()
CVE ID: CVE-2011-3588
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