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.