6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
5.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
7.8 High
AI Score
Confidence
High
0.007 Low
EPSS
Percentile
80.3%
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2730 advisory.
KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.
Security Fix(es):
* Slirp: OOB buffer access while emulating tcp protocols in tcp_emu() (CVE-2020-7039)
* Slirp: potential OOB access due to unsafe snprintf() usages (CVE-2020-8608)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2020:2730. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(137758);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/04");
script_cve_id("CVE-2020-7039", "CVE-2020-8608");
script_xref(name:"RHSA", value:"2020:2730");
script_name(english:"RHEL 7 : qemu-kvm-rhev (RHSA-2020:2730)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for qemu-kvm-rhev.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2020:2730 advisory.
KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on a variety of architectures. The qemu-kvm-rhev packages provide the
user-space component for running virtual machines that use KVM in
environments managed by Red Hat products.
Security Fix(es):
* Slirp: OOB buffer access while emulating tcp protocols in tcp_emu() (CVE-2020-7039)
* Slirp: potential OOB access due to unsafe snprintf() usages
(CVE-2020-8608)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page listed in the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
# https://access.redhat.com/security/data/csaf/v2/advisories/2020/rhsa-2020_2730.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?63746e5c");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2020:2730");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1791551");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1798453");
script_set_attribute(attribute:"solution", value:
"Update the RHEL qemu-kvm-rhev package based on the guidance in RHSA-2020:2730.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8608");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(122);
script_set_attribute(attribute:"vendor_severity", value:"Important");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/16");
script_set_attribute(attribute:"patch_publication_date", value:"2020/06/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/24");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-img-rhev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-common-rhev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools-rhev");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat 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", "redhat_repos.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
include('rhel.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '7')) audit(AUDIT_OS_NOT, 'Red Hat 7.x', 'Red Hat ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);
var constraints = [
{
'repo_relative_urls': [
'content/dist/rhel/client/7/7Client/x86_64/openstack-tools/13/debug',
'content/dist/rhel/client/7/7Client/x86_64/openstack-tools/13/os',
'content/dist/rhel/client/7/7Client/x86_64/openstack-tools/13/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack-deployment-tools/13/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack-deployment-tools/13/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack-deployment-tools/13/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack-devtools/13/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack-devtools/13/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack-devtools/13/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack/13/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack/13/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/openstack/13/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/openstack-deployment-tools/13/debug',
'content/dist/rhel/server/7/7Server/x86_64/openstack-deployment-tools/13/os',
'content/dist/rhel/server/7/7Server/x86_64/openstack-deployment-tools/13/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/openstack-devtools/13/debug',
'content/dist/rhel/server/7/7Server/x86_64/openstack-devtools/13/os',
'content/dist/rhel/server/7/7Server/x86_64/openstack-devtools/13/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/openstack-octavia/13/debug',
'content/dist/rhel/server/7/7Server/x86_64/openstack-octavia/13/os',
'content/dist/rhel/server/7/7Server/x86_64/openstack-octavia/13/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/openstack-tools/13/debug',
'content/dist/rhel/server/7/7Server/x86_64/openstack-tools/13/os',
'content/dist/rhel/server/7/7Server/x86_64/openstack-tools/13/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/openstack/13/debug',
'content/dist/rhel/server/7/7Server/x86_64/openstack/13/os',
'content/dist/rhel/server/7/7Server/x86_64/openstack/13/source/SRPMS',
'content/dist/rhel/workstation/7/7Workstation/x86_64/openstack-tools/13/debug',
'content/dist/rhel/workstation/7/7Workstation/x86_64/openstack-tools/13/os',
'content/dist/rhel/workstation/7/7Workstation/x86_64/openstack-tools/13/source/SRPMS',
'content/els/rhel/client/7/7Client/x86_64/openstack-tools/13/debug',
'content/els/rhel/client/7/7Client/x86_64/openstack-tools/13/os',
'content/els/rhel/client/7/7Client/x86_64/openstack-tools/13/source/SRPMS',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack-deployment-tools/13/debug',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack-deployment-tools/13/os',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack-deployment-tools/13/source/SRPMS',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack-devtools/13/debug',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack-devtools/13/os',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack-devtools/13/source/SRPMS',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack/13/debug',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack/13/os',
'content/els/rhel/power-le/7/7Server/ppc64le/openstack/13/source/SRPMS',
'content/els/rhel/server/7/7Server/x86_64/openstack-deployment-tools/13/debug',
'content/els/rhel/server/7/7Server/x86_64/openstack-deployment-tools/13/os',
'content/els/rhel/server/7/7Server/x86_64/openstack-deployment-tools/13/source/SRPMS',
'content/els/rhel/server/7/7Server/x86_64/openstack-devtools/13/debug',
'content/els/rhel/server/7/7Server/x86_64/openstack-devtools/13/os',
'content/els/rhel/server/7/7Server/x86_64/openstack-devtools/13/source/SRPMS',
'content/els/rhel/server/7/7Server/x86_64/openstack-octavia/13/debug',
'content/els/rhel/server/7/7Server/x86_64/openstack-octavia/13/os',
'content/els/rhel/server/7/7Server/x86_64/openstack-octavia/13/source/SRPMS',
'content/els/rhel/server/7/7Server/x86_64/openstack-tools/13/debug',
'content/els/rhel/server/7/7Server/x86_64/openstack-tools/13/os',
'content/els/rhel/server/7/7Server/x86_64/openstack-tools/13/source/SRPMS',
'content/els/rhel/server/7/7Server/x86_64/openstack/13/debug',
'content/els/rhel/server/7/7Server/x86_64/openstack/13/os',
'content/els/rhel/server/7/7Server/x86_64/openstack/13/source/SRPMS',
'content/els/rhel/workstation/7/7Workstation/x86_64/openstack-tools/13/debug',
'content/els/rhel/workstation/7/7Workstation/x86_64/openstack-tools/13/os',
'content/els/rhel/workstation/7/7Workstation/x86_64/openstack-tools/13/source/SRPMS',
'content/eus/rhel/server/7/7.6/x86_64/openstack-octavia/13/debug',
'content/eus/rhel/server/7/7.6/x86_64/openstack-octavia/13/os',
'content/eus/rhel/server/7/7.6/x86_64/openstack-octavia/13/source/SRPMS',
'content/eus/rhel/server/7/7.6/x86_64/openstack/13/debug',
'content/eus/rhel/server/7/7.6/x86_64/openstack/13/os',
'content/eus/rhel/server/7/7.6/x86_64/openstack/13/source/SRPMS'
],
'pkgs': [
{'reference':'qemu-img-rhev-2.12.0-18.el7_6.11', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-img-rhev-2.12.0-44.el7_8.1', 'cpu':'ppc64le', 'release':'7', 'el_string':'el7_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-img-rhev-2.12.0-44.el7_8.1', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-common-rhev-2.12.0-18.el7_6.11', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-common-rhev-2.12.0-44.el7_8.1', 'cpu':'ppc64le', 'release':'7', 'el_string':'el7_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-common-rhev-2.12.0-44.el7_8.1', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-rhev-2.12.0-18.el7_6.11', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-rhev-2.12.0-44.el7_8.1', 'cpu':'ppc64le', 'release':'7', 'el_string':'el7_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-rhev-2.12.0-44.el7_8.1', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-tools-rhev-2.12.0-18.el7_6.11', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-tools-rhev-2.12.0-44.el7_8.1', 'cpu':'ppc64le', 'release':'7', 'el_string':'el7_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
{'reference':'qemu-kvm-tools-rhev-2.12.0-44.el7_8.1', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'}
]
}
];
var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);
var flag = 0;
foreach var constraint_array ( constraints ) {
var repo_relative_urls = NULL;
if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
foreach var pkg ( constraint_array['pkgs'] ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
var cves = NULL;
if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
if (reference &&
_release &&
rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
(applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
}
}
if (flag)
{
var extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
else extra = rpm_report_get();
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : extra
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'qemu-img-rhev / qemu-kvm-common-rhev / qemu-kvm-rhev / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | qemu-kvm-tools-rhev | p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools-rhev |
redhat | enterprise_linux | qemu-kvm-common-rhev | p-cpe:/a:redhat:enterprise_linux:qemu-kvm-common-rhev |
redhat | enterprise_linux | 7 | cpe:/o:redhat:enterprise_linux:7 |
redhat | enterprise_linux | qemu-kvm-rhev | p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev |
redhat | enterprise_linux | qemu-img-rhev | p-cpe:/a:redhat:enterprise_linux:qemu-img-rhev |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7039
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8608
www.nessus.org/u?63746e5c
access.redhat.com/errata/RHSA-2020:2730
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1791551
bugzilla.redhat.com/show_bug.cgi?id=1798453
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
5.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
7.8 High
AI Score
Confidence
High
0.007 Low
EPSS
Percentile
80.3%