CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
72.1%
An update for ovmf is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
OVMF (Open Virtual Machine Firmware) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM.
Security Fix(es) :
edk2: Privilege escalation via processing of malformed files in TianoCompress.c (CVE-2017-5731)
edk2: Privilege escalation via processing of malformed files in BaseUefiDecompressLib.c (CVE-2017-5732)
edk2: Privilege escalation via heap-based buffer overflow in MakeTable() function (CVE-2017-5733)
edk2: Privilege escalation via stack-based buffer overflow in MakeTable() function (CVE-2017-5734)
edk2: Privilege escalation via heap-based buffer overflow in Decode() function (CVE-2017-5735)
edk2: Logic error in MdeModulePkg in EDK II firmware allows for privilege escalation by authenticated users (CVE-2018-3613)
openssl: Side-channel vulnerability on SMT/Hyper-Threading architectures (PortSmash) (CVE-2018-5407)
edk2: Stack buffer overflow with corrupted BMP (CVE-2018-12181)
edk2: buffer overflows in PartitionDxe and UdfDxe with long file names and invalid UDF media (CVE-2019-0160)
edk2: stack overflow in XHCI causing denial of service (CVE-2019-0161)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes :
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2019:2125 and
# CentOS Errata and Security Advisory 2019:2125 respectively.
#
include("compat.inc");
if (description)
{
script_id(128356);
script_version("1.4");
script_cvs_date("Date: 2019/12/31");
script_cve_id("CVE-2017-5731", "CVE-2017-5732", "CVE-2017-5733", "CVE-2017-5734", "CVE-2017-5735", "CVE-2018-12181", "CVE-2018-3613", "CVE-2018-5407", "CVE-2019-0160", "CVE-2019-0161");
script_xref(name:"RHSA", value:"2019:2125");
script_name(english:"CentOS 7 : ovmf (CESA-2019:2125)");
script_summary(english:"Checks rpm output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote CentOS host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"An update for ovmf is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.
OVMF (Open Virtual Machine Firmware) is a project to enable UEFI
support for Virtual Machines. This package contains a sample 64-bit
UEFI firmware for QEMU and KVM.
Security Fix(es) :
* edk2: Privilege escalation via processing of malformed files in
TianoCompress.c (CVE-2017-5731)
* edk2: Privilege escalation via processing of malformed files in
BaseUefiDecompressLib.c (CVE-2017-5732)
* edk2: Privilege escalation via heap-based buffer overflow in
MakeTable() function (CVE-2017-5733)
* edk2: Privilege escalation via stack-based buffer overflow in
MakeTable() function (CVE-2017-5734)
* edk2: Privilege escalation via heap-based buffer overflow in
Decode() function (CVE-2017-5735)
* edk2: Logic error in MdeModulePkg in EDK II firmware allows for
privilege escalation by authenticated users (CVE-2018-3613)
* openssl: Side-channel vulnerability on SMT/Hyper-Threading
architectures (PortSmash) (CVE-2018-5407)
* edk2: Stack buffer overflow with corrupted BMP (CVE-2018-12181)
* edk2: buffer overflows in PartitionDxe and UdfDxe with long file
names and invalid UDF media (CVE-2019-0160)
* edk2: stack overflow in XHCI causing denial of service
(CVE-2019-0161)
For more details about the security issue(s), including the impact, a
CVSS score, acknowledgments, and other related information, refer to
the CVE page(s) listed in the References section.
Additional Changes :
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.7 Release Notes linked from the References section."
);
# https://lists.centos.org/pipermail/centos-cr-announce/2019-August/006035.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?ecd7d721"
);
script_set_attribute(attribute:"solution", value:"Update the affected ovmf package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/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-2019-0160");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:OVMF");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/15");
script_set_attribute(attribute:"patch_publication_date", value:"2019/08/29");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/30");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"CentOS Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);
if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);
flag = 0;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"OVMF-20180508-6.gitee3198e672e2.el7")) flag++;
if (flag)
{
cr_plugin_caveat = '\n' +
'NOTE: The security advisory associated with this vulnerability has a\n' +
'fixed package version that may only be available in the continuous\n' +
'release (CR) repository for CentOS, until it is present in the next\n' +
'point release of CentOS.\n\n' +
'If an equal or higher package level does not exist in the baseline\n' +
'repository for your major version of CentOS, then updates from the CR\n' +
'repository will need to be applied in order to address the\n' +
'vulnerability.\n';
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get() + cr_plugin_caveat
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "OVMF");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5731
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5732
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5733
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5734
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5735
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12181
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3613
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5407
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0160
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0161
www.nessus.org/u?ecd7d721
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
72.1%