CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
71.5%
The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.
QEMU: usbredir: free() call on invalid pointer in bufp_alloc() (CVE-2021-3682)
qemu-bridge-helper.c in QEMU 3.1 and 4.0.0 does not ensure that a network interface name (obtained from bridge.conf or a --br=bridge option) is limited to the IFNAMSIZ size, which can lead to an ACL bypass.
(CVE-2019-13164)
In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference. (CVE-2020-15469)
Note that Nessus has not tested for these issues but has instead relied on the package manager’s report that the package is installed.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory qemu-kvm. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(202320);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/12");
script_cve_id(
"CVE-2019-13164",
"CVE-2020-15469",
"CVE-2020-25084",
"CVE-2020-25741",
"CVE-2021-3416",
"CVE-2021-3507",
"CVE-2021-3527",
"CVE-2021-3592",
"CVE-2021-3594",
"CVE-2021-3595",
"CVE-2021-3682",
"CVE-2021-3735",
"CVE-2021-3750",
"CVE-2021-3930",
"CVE-2021-4206",
"CVE-2021-4207",
"CVE-2021-20257",
"CVE-2023-3019",
"CVE-2023-3301",
"CVE-2023-5088",
"CVE-2023-6693",
"CVE-2024-3446"
);
script_xref(name:"IAVB", value:"2020-B-0063-S");
script_name(english:"RHEL 8 : qemu-kvm (Unpatched Vulnerability)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat 8 host is affected by multiple vulnerabilities that will not be patched.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple
vulnerabilities that have been acknowledged by the vendor but will not be patched.
- QEMU: usbredir: free() call on invalid pointer in bufp_alloc() (CVE-2021-3682)
- qemu-bridge-helper.c in QEMU 3.1 and 4.0.0 does not ensure that a network interface name (obtained from
bridge.conf or a --br=bridge option) is limited to the IFNAMSIZ size, which can lead to an ACL bypass.
(CVE-2019-13164)
- In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer
dereference. (CVE-2020-15469)
Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package
is installed.");
script_set_attribute(attribute:"solution", value:
"The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation
guidance.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/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:H/PR:L/UI:N/S:C/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-2021-3682");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vendor_unpatched", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/07/12");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libslirp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"II");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat Local Security Checks");
script_copyright(english:"This script is Copyright (C) 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("global_settings/vendor_unpatched"))
exit(0, "Unpatched Vulnerabilities Detection not active.");
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: '8')) audit(AUDIT_OS_NOT, 'Red Hat 8.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 appstreams = {
'container-tools:3.0': [
{
'pkgs': [
{'reference':'libslirp', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'libslirp', 'cves':['CVE-2021-3592', 'CVE-2021-3594', 'CVE-2021-3595']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2021-3592', 'CVE-2021-3594', 'CVE-2021-3595']}
]
}
],
'container-tools:rhel8': [
{
'pkgs': [
{'reference':'libslirp', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'libslirp', 'cves':['CVE-2021-3592', 'CVE-2021-3594', 'CVE-2021-3595']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2021-3592', 'CVE-2021-3594', 'CVE-2021-3595']}
]
}
],
'virt:8.2': [
{
'pkgs': [
{'reference':'libslirp', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'libslirp', 'cves':['CVE-2021-3592', 'CVE-2021-3594', 'CVE-2021-3595']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2020-15469', 'CVE-2020-25741', 'CVE-2021-3527', 'CVE-2021-3735']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2020-15469', 'CVE-2020-25741', 'CVE-2021-3416', 'CVE-2021-3507', 'CVE-2021-3527', 'CVE-2021-3592', 'CVE-2021-3594', 'CVE-2021-3595', 'CVE-2021-3735', 'CVE-2021-3930', 'CVE-2021-4206', 'CVE-2021-4207', 'CVE-2021-20257']}
]
}
],
'virt:8.3': [
{
'pkgs': [
{'reference':'libslirp', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'libslirp', 'cves':['CVE-2021-3592', 'CVE-2021-3594', 'CVE-2021-3595']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2020-25084', 'CVE-2021-3527']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2020-25084', 'CVE-2021-3416', 'CVE-2021-3507', 'CVE-2021-3527', 'CVE-2021-3592', 'CVE-2021-3594', 'CVE-2021-3595', 'CVE-2021-3682', 'CVE-2021-20257']}
]
}
],
'virt:8.0.0': [
{
'pkgs': [
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2019-13164']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2019-13164']}
]
}
],
'virt:av': [
{
'pkgs': [
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2021-3507', 'CVE-2021-3527', 'CVE-2021-3735', 'CVE-2021-3750', 'CVE-2023-3019', 'CVE-2023-3301', 'CVE-2023-5088', 'CVE-2023-6693', 'CVE-2024-3446']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2021-3527', 'CVE-2021-3735']}
]
}
],
'virt:rhel': [
{
'pkgs': [
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2019-13164', 'CVE-2020-15469', 'CVE-2020-25084', 'CVE-2021-3527', 'CVE-2021-3735']},
{'reference':'qemu-kvm', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2019-13164', 'CVE-2020-15469', 'CVE-2020-25084', 'CVE-2021-3527', 'CVE-2021-3735']}
]
}
]
};
var flag = 0;
var appstreams_found = 0;
foreach var module (keys(appstreams)) {
var appstream = NULL;
var appstream_name = NULL;
var appstream_version = NULL;
var appstream_split = split(module, sep:':', keep:FALSE);
if (!empty_or_null(appstream_split)) {
appstream_name = appstream_split[0];
appstream_version = appstream_split[1];
if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/RedHat/appstream/' + appstream_name);
}
if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
appstreams_found++;
foreach var module_array ( appstreams[module] ) {
var repo_relative_urls = NULL;
var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls:repo_relative_urls);
foreach var package_array ( module_array['pkgs'] ) {
var unpatched_pkg = NULL;
var _release = NULL;
var sp = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var exists_check = NULL;
var cves = NULL;
if (!empty_or_null(package_array['unpatched_pkg'])) unpatched_pkg = package_array['unpatched_pkg'];
if (!empty_or_null(package_array['release'])) _release = 'RHEL' + package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
if (unpatched_pkg &&
_release &&
(!exists_check || rpm_exists(release:_release, rpm:exists_check)) &&
unpatched_package_exists(release:_release, package:unpatched_pkg, cves: cves)) flag++;
}
}
}
}
if (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module container-tools:3.0 / container-tools:rhel8 / virt:8.0.0 / virt:8.2 / virt:8.3 / virt:av / virt:rhel');
if (flag)
{
var extra = NULL;
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : unpatched_packages_report()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libslirp / qemu-kvm');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13164
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15469
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25084
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25741
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20257
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3416
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3507
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3527
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3592
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3594
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3595
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3682
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3735
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3750
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3930
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4206
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4207
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3019
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3301
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5088
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6693
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-3446
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
71.5%