CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
87.7%
According to the versions of the parallels-server-bm-release / vzkernel / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities :
A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4 and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a denial of service on the system.
An integer overflow flaw was found in the Linux kernel’s create_elf_tables() function. An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system (Mutagen Astronomy).
The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIMIT_INFINITY, but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation.
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.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(121098);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id(
"CVE-2017-1000365",
"CVE-2018-14634",
"CVE-2018-5391"
);
script_name(english:"Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2018-075)");
script_summary(english:"Checks the rpm output for the updated packages.");
script_set_attribute(attribute:"synopsis", value:
"The remote Virtuozzo host is missing multiple security updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the parallels-server-bm-release /
vzkernel / etc packages installed, the Virtuozzo installation on the
remote host is affected by the following vulnerabilities :
- A flaw named FragmentSmack was found in the way the
Linux kernel handled reassembly of fragmented IPv4 and
IPv6 packets. A remote attacker could use this flaw to
trigger time and calculation expensive fragment
reassembly algorithm by sending specially crafted
packets which could lead to a CPU saturation and hence
a denial of service on the system.
- An integer overflow flaw was found in the Linux
kernel's create_elf_tables() function. An unprivileged
local user with access to SUID (or otherwise
privileged) binary could use this flaw to escalate
their privileges on the system (Mutagen Astronomy).
- The Linux Kernel imposes a size restriction on the
arguments and environmental strings passed through
RLIMIT_STACK/RLIMIT_INFINITY, but does not take the
argument and environment pointers into account, which
allows attackers to bypass this limitation.
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.");
script_set_attribute(attribute:"see_also", value:"https://virtuozzosupport.force.com/s/article/VZA-2018-075");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/articles/3553061");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2018:2846");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/vulnerabilities/mutagen-astronomy");
script_set_attribute(attribute:"solution", value:
"Update the affected parallels-server-bm-release / vzkernel / etc packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-14634");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"patch_publication_date", value:"2018/10/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:parallels-server-bm-release");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:vzkernel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:vzkernel-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:vzkernel-firmware");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:vzmodules");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:vzmodules-devel");
script_set_attribute(attribute:"cpe", value:"cpe:/o:virtuozzo:virtuozzo:6");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Virtuozzo Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Virtuozzo/release", "Host/Virtuozzo/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Virtuozzo/release");
if (isnull(release) || "Virtuozzo" >!< release) audit(AUDIT_OS_NOT, "Virtuozzo");
os_ver = pregmatch(pattern: "Virtuozzo Linux release ([0-9]+\.[0-9])(\D|$)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Virtuozzo");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Virtuozzo 6.x", "Virtuozzo " + os_ver);
if (!get_kb_item("Host/Virtuozzo/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Virtuozzo", cpu);
flag = 0;
pkgs = ["parallels-server-bm-release-6.0.12-3724",
"vzkernel-2.6.32-042stab134.3",
"vzkernel-devel-2.6.32-042stab134.3",
"vzkernel-firmware-2.6.32-042stab134.3",
"vzmodules-2.6.32-042stab134.3",
"vzmodules-devel-2.6.32-042stab134.3"];
foreach (pkg in pkgs)
if (rpm_check(release:"Virtuozzo-6", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "parallels-server-bm-release / vzkernel / etc");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000365
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14634
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5391
access.redhat.com/articles/3553061
access.redhat.com/errata/RHSA-2018:2846
access.redhat.com/security/vulnerabilities/mutagen-astronomy
virtuozzosupport.force.com/s/article/VZA-2018-075
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
87.7%