4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
7.8 High
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
8.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
21.6%
The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4953 advisory.
xorg-x11-server: Out-of-bounds access in XkbSetNames function (CVE-2020-14345)
xorg-x11-server: Integer underflow in the X input extension protocol (CVE-2020-14346)
xorg-x11-server: XkbSelectEvents integer underflow privilege escalation vulnerability (CVE-2020-14361)
xorg-x11-server: XRecordRegisterClients integer underflow privilege escalation vulnerability (CVE-2020-14362)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. 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(144424);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/01");
script_cve_id(
"CVE-2020-14345",
"CVE-2020-14346",
"CVE-2020-14361",
"CVE-2020-14362"
);
script_name(english:"Virtuozzo 6 : xorg-x11-server-Xdmx / xorg-x11-server-Xephyr / etc (VZLSA-2020-4953)");
script_set_attribute(attribute:"synopsis", value:
"The remote Virtuozzo host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4953 advisory.
- xorg-x11-server: Out-of-bounds access in XkbSetNames function (CVE-2020-14345)
- xorg-x11-server: Integer underflow in the X input extension protocol (CVE-2020-14346)
- xorg-x11-server: XkbSelectEvents integer underflow privilege escalation vulnerability (CVE-2020-14361)
- xorg-x11-server: XRecordRegisterClients integer underflow privilege escalation vulnerability (CVE-2020-14362)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Note that Tenable Network Security has attempted to extract the
preceding description block directly from the corresponding Red Hat
security advisory. Virtuozzo provides no description for VZLSA
advisories. Tenable has attempted to automatically clean and format
it as much as possible without introducing additional issues.");
# http://repo.virtuozzo.com/vzlinux/announcements/json/VZLSA-2020-4953.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d4d9a46c");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2020:4953");
script_set_attribute(attribute:"solution", value:
"Update the affected xorg-x11-server-Xdmx / xorg-x11-server-Xephyr / etc package.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-14362");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"patch_publication_date", value:"2020/11/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/18");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-Xdmx");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-Xephyr");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-Xnest");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-Xorg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-Xvfb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-source");
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) 2020-2024 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 = ["xorg-x11-server-Xdmx-1.17.4-18.vl6",
"xorg-x11-server-Xephyr-1.17.4-18.vl6",
"xorg-x11-server-Xnest-1.17.4-18.vl6",
"xorg-x11-server-Xorg-1.17.4-18.vl6",
"xorg-x11-server-Xvfb-1.17.4-18.vl6",
"xorg-x11-server-common-1.17.4-18.vl6",
"xorg-x11-server-devel-1.17.4-18.vl6",
"xorg-x11-server-source-1.17.4-18.vl6"];
foreach (pkg in pkgs)
if (rpm_check(release:"Virtuozzo-6", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
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, "xorg-x11-server-Xdmx / xorg-x11-server-Xephyr / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
virtuozzo | virtuozzo | xorg-x11-server-xdmx | p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-xdmx |
virtuozzo | virtuozzo | xorg-x11-server-xephyr | p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-xephyr |
virtuozzo | virtuozzo | xorg-x11-server-xnest | p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-xnest |
virtuozzo | virtuozzo | xorg-x11-server-xorg | p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-xorg |
virtuozzo | virtuozzo | xorg-x11-server-xvfb | p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-xvfb |
virtuozzo | virtuozzo | xorg-x11-server-common | p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-common |
virtuozzo | virtuozzo | xorg-x11-server-devel | p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-devel |
virtuozzo | virtuozzo | xorg-x11-server-source | p-cpe:/a:virtuozzo:virtuozzo:xorg-x11-server-source |
virtuozzo | virtuozzo | 6 | cpe:/o:virtuozzo:virtuozzo:6 |
4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
7.8 High
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
8.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
21.6%