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
7.1 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 a vulnerability as referenced in the RHSA-2020:1292 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):
* CVE-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf() usages
Users of qemu-kvm are advised to upgrade to these updated packages. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue 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-2020:1292. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(135175);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");
script_cve_id("CVE-2020-8608");
script_xref(name:"RHSA", value:"2020:1292");
script_name(english:"RHEL 7 : qemu-kvm-rhev (RHSA-2020:1292)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for qemu-kvm-rhev.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2020:1292 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):
* CVE-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf() usages
Users of qemu-kvm are advised to upgrade to these updated packages. After installing this update, shut
down all running virtual machines. Once all virtual machines have shut down, start them again for this
update to take effect.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue 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_1292.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0967afdb");
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-2020:1292");
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-2020:1292.");
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:"2020/02/06");
script_set_attribute(attribute:"patch_publication_date", value:"2020/04/02");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/02");
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-alt/server/7/7Server/power9/ppc64le/rhv-mgmt-agent/4/debug',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/rhv-mgmt-agent/4/os',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/rhv-mgmt-agent/4/source/SRPMS',
'content/dist/rhel/power-le/7/7.3/ppc64le/rhev-mgmt-agent/3/debug',
'content/dist/rhel/power-le/7/7.3/ppc64le/rhev-mgmt-agent/3/os',
'content/dist/rhel/power-le/7/7.3/ppc64le/rhev-mgmt-agent/3/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhev-mgmt-agent/3/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhev-mgmt-agent/3/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhev-mgmt-agent/3/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhev-tools/3/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhev-tools/3/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhev-tools/3/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhv-mgmt-agent/4/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhv-mgmt-agent/4/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhv-mgmt-agent/4/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhv-tools/4/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhv-tools/4/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/rhv-tools/4/source/SRPMS',
'content/dist/rhel/power/7/7Server/ppc64/rhev-tools/3/debug',
'content/dist/rhel/power/7/7Server/ppc64/rhev-tools/3/os',
'content/dist/rhel/power/7/7Server/ppc64/rhev-tools/3/source/SRPMS',
'content/dist/rhel/server/7/7.3/x86_64/rhev-mgmt-agent/3/debug',
'content/dist/rhel/server/7/7.3/x86_64/rhev-mgmt-agent/3/os',
'content/dist/rhel/server/7/7.3/x86_64/rhev-mgmt-agent/3/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhev-mgmt-agent/3/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhev-mgmt-agent/3/os',
'content/dist/rhel/server/7/7Server/x86_64/rhev-mgmt-agent/3/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhevh/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhevh/os',
'content/dist/rhel/server/7/7Server/x86_64/rhevh/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhv-manager-tools/4/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhv-manager-tools/4/os',
'content/dist/rhel/server/7/7Server/x86_64/rhv-manager-tools/4/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhv-mgmt-agent/4.3/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhv-mgmt-agent/4.3/os',
'content/dist/rhel/server/7/7Server/x86_64/rhv-mgmt-agent/4.3/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhv-mgmt-agent/4/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhv-mgmt-agent/4/os',
'content/dist/rhel/server/7/7Server/x86_64/rhv-mgmt-agent/4/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhv-tools/4/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhv-tools/4/os',
'content/dist/rhel/server/7/7Server/x86_64/rhv-tools/4/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhvh-build/4.3/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhvh-build/4.3/os',
'content/dist/rhel/server/7/7Server/x86_64/rhvh-build/4.3/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhvh-build/4/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhvh-build/4/os',
'content/dist/rhel/server/7/7Server/x86_64/rhvh-build/4/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhvh/4.3/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhvh/4.3/os',
'content/dist/rhel/server/7/7Server/x86_64/rhvh/4.3/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/rhvh/4/debug',
'content/dist/rhel/server/7/7Server/x86_64/rhvh/4/os',
'content/dist/rhel/server/7/7Server/x86_64/rhvh/4/source/SRPMS'
],
'pkgs': [
{'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':'ovirt-'},
{'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':'ovirt-'},
{'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':'ovirt-'},
{'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':'ovirt-'},
{'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':'ovirt-'},
{'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':'ovirt-'},
{'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':'ovirt-'},
{'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':'ovirt-'}
]
}
];
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 |
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
7.1 High
AI Score
Confidence
High
0.007 Low
EPSS
Percentile
80.3%