Virtuozzo 7 : readykernel-patch (VZA-2017-070)

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


Synopsis :

The remote Virtuozzo host is missing a security update.

Description :

According to the version of the vzkernel package and the
readykernel-patch installed, the Virtuozzo installation on the remote
host is affected by the following vulnerability :

- A race condition was found in the Linux kernel, present
since v3.14-rc1 through v4.12. The race happens between
threads of inotify_handle_event() and vfs_rename()
while running the rename operation against the same
file. As a result of the race the next slab data or the
slab's free list pointer can be corrupted with
attacker-controlled data.

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/2857146
http://www.nessus.org/u?4e22e798
http://www.nessus.org/u?90084127
http://www.nessus.org/u?e8143d61
http://www.nessus.org/u?e5202efa
http://www.nessus.org/u?fea3e5ea
http://www.nessus.org/u?8b4d6f24

Solution :

Update the readykernel patch.

Risk factor :

Medium / CVSS Base Score : 6.9
(CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.7
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Virtuozzo Local Security Checks

Nessus Plugin ID: 102436 ()

Bugtraq ID:

CVE ID: CVE-2017-7533

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