CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
38.9%
The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2023:5094 advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# AlmaLinux Security Advisory ALSA-2023:5094.
##
include('compat.inc');
if (description)
{
script_id(181440);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/15");
script_cve_id("CVE-2023-3354");
script_xref(name:"ALSA", value:"2023:5094");
script_xref(name:"IAVB", value:"2023-B-0073-S");
script_name(english:"AlmaLinux 9 : qemu-kvm (ALSA-2023:5094)");
script_set_attribute(attribute:"synopsis", value:
"The remote AlmaLinux host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the
ALSA-2023:5094 advisory.
- A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks
whether the current number of connections crosses a certain threshold and if so, cleans up the previous
connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the
connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated
client to cause a denial of service. (CVE-2023-3354)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://errata.almalinux.org/9/ALSA-2023-5094.html");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2023-3354");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(476);
script_set_attribute(attribute:"vuln_publication_date", value:"2023/07/11");
script_set_attribute(attribute:"patch_publication_date", value:"2023/09/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/14");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-guest-agent");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-img");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-audio-pa");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-block-curl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-block-rbd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-device-display-virtio-gpu");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-device-display-virtio-gpu-ccw");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-device-display-virtio-gpu-pci");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-device-display-virtio-vga");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-device-usb-host");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-device-usb-redirect");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-ui-egl-headless");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-kvm-ui-opengl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:qemu-pr-helper");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::appstream");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::baseos");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::crb");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::highavailability");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::nfv");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::realtime");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::resilientstorage");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::sap");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::sap_hana");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:9::supplementary");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Alma Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/AlmaLinux/release');
if (isnull(os_release) || 'AlmaLinux' >!< os_release) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_ver = pregmatch(pattern: "AlmaLinux release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
os_ver = os_ver[1];
if (! preg(pattern:"^9([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'AlmaLinux 9.x', 'AlmaLinux ' + os_ver);
if (!get_kb_item('Host/AlmaLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);
var pkgs = [
{'reference':'qemu-guest-agent-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-guest-agent-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-img-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-img-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-audio-pa-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-audio-pa-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-block-curl-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-block-curl-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-block-rbd-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-block-rbd-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-common-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-common-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-core-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-core-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-display-virtio-gpu-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-display-virtio-gpu-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-display-virtio-gpu-ccw-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-display-virtio-gpu-ccw-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-display-virtio-gpu-pci-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-display-virtio-gpu-pci-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-display-virtio-vga-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-display-virtio-vga-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-usb-host-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-usb-host-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-usb-redirect-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-device-usb-redirect-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-docs-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-docs-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-tools-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-tools-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-ui-egl-headless-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-ui-egl-headless-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-ui-opengl-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-kvm-ui-opengl-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-pr-helper-7.2.0-14.el9_2.5.alma.1', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
{'reference':'qemu-pr-helper-7.2.0-14.el9_2.5.alma.1', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'}
];
var flag = 0;
foreach var package_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;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'Alma-' + package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
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['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
if (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)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'qemu-guest-agent / qemu-img / qemu-kvm / qemu-kvm-audio-pa / etc');
}
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
38.9%