Virtuozzo 7 : OVMF / anaconda / anaconda-core / anaconda-dracut / etc (VZA-2017-066)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Virtuozzo host is missing multiple security updates.

Description :

According to the versions of the OVMF / anaconda / anaconda-core /
anaconda-dracut / etc packages installed, the Virtuozzo installation
on the remote host is affected by the following vulnerabilities :

- A vulnerability was found in the signal handling in the
Linux kernel. A local unprivileged user could cause a
kernel crash (general protection fault) in the
cleanup_timers() function by using the
rt_tgsigqueueinfo() system call with a specially
crafted set of arguments.

- A privileged user inside a container could cause a
kernel crash by triggering a GPF in rt6_device_match by
executing specially crafted code.

- If the sctp module was loaded on the host, a privileged
user inside a container could cause a kernel crash by
triggering a NULL pointer dererefence in the
sctp_endpoint_destroy() function with a specially
crafted sequence of system calls.

- A privileged user inside a container could cause a
kernel crash by triggering a BUG_ON in the
unregister_netdevice_many() function with a specially
crafted sequence of system calls.

- A vulnerability was found in the implementation of
setsockopt() operations in the Linux kernel. A
privileged user inside a container could cause a DoS
attack on the host (kernel deadlock in ip_ra_control()
function) using a specially crafted sequence of system
calls.

- If the sctp module was loaded on the host, a privileged
user inside a container could make sctp listen on a
socket in an inappropriate state, causing a kernel
crash (use-after-free in sctp_wait_for_sndbuf()).

- A privileged user inside a container could cause a
kernel crash by triggering a GPF in
irq_bypass_unregister_consumer by executing specially
crafted code.

Note that Tenable Network Security has extracted the preceding
description block directly from the Virtuozzo security advisory.
Tenable has attempted to automatically clean and format it as much as
possible without introducing additional issues.

See also :

https://help.virtuozzo.com/customer/portal/articles/2852161

Solution :

Update the affected OVMF / anaconda / anaconda-core / anaconda-dracut / etc packages.

Risk factor :

Medium

Family: Virtuozzo Local Security Checks

Nessus Plugin ID: 102134 ()

Bugtraq ID:

CVE ID:

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