The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2020-1562 advisory.
QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd. (CVE-2019-20382)
An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice ‘setup_len’ exceeds its ‘data_buf[4096]’ in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host. (CVE-2020-14364)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2020-1562.
##
include('compat.inc');
if (description)
{
script_id(142726);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/11/11");
script_cve_id("CVE-2019-20382", "CVE-2020-14364");
script_xref(name:"ALAS", value:"2020-1562");
script_name(english:"Amazon Linux 2 : ivshmem-tools (ALAS-2020-1562)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by
multiple vulnerabilities as referenced in the ALAS2-2020-1562 advisory.
- QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation
because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in
deflateEnd. (CVE-2019-20382)
- An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before
5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its
'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the
QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the
privileges of the QEMU process on the host. (CVE-2020-14364)
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://alas.aws.amazon.com/AL2/ALAS-2020-1562.html");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2019-20382");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-14364");
script_set_attribute(attribute:"solution", value:
"Run 'yum update qemu' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:H/PR:H/UI:N/S:C/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-2020-14364");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/05");
script_set_attribute(attribute:"patch_publication_date", value:"2020/11/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ivshmem-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-audio-alsa");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-audio-oss");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-audio-pa");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-audio-sdl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-block-curl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-block-dmg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-block-iscsi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-block-nfs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-block-rbd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-block-ssh");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-guest-agent");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-img");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-system-aarch64");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-system-aarch64-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-system-x86");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-system-x86-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-ui-curses");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-ui-gtk");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-ui-sdl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-user");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-user-binfmt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-user-static");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "2")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
pkgs = [
{'reference':'ivshmem-tools-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'ivshmem-tools-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'ivshmem-tools-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-audio-alsa-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-audio-alsa-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-audio-alsa-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-audio-oss-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-audio-oss-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-audio-oss-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-audio-pa-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-audio-pa-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-audio-pa-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-audio-sdl-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-audio-sdl-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-audio-sdl-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-block-curl-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-block-curl-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-block-curl-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-block-dmg-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-block-dmg-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-block-dmg-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-block-iscsi-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-block-iscsi-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-block-iscsi-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-block-nfs-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-block-nfs-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-block-nfs-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-block-rbd-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-block-rbd-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-block-ssh-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-block-ssh-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-block-ssh-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-common-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-common-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-common-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-debuginfo-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-debuginfo-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-debuginfo-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-guest-agent-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-guest-agent-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-guest-agent-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-img-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-img-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-img-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-kvm-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-kvm-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-kvm-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-kvm-core-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-kvm-core-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-kvm-core-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-system-aarch64-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-system-aarch64-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-system-aarch64-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-system-aarch64-core-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-system-aarch64-core-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-system-aarch64-core-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-system-x86-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-system-x86-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-system-x86-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-system-x86-core-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-system-x86-core-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-system-x86-core-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-ui-curses-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-ui-curses-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-ui-curses-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-ui-gtk-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-ui-gtk-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-ui-gtk-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-ui-sdl-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-ui-sdl-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-ui-sdl-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-user-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-user-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-user-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-user-binfmt-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-user-binfmt-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-user-binfmt-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'},
{'reference':'qemu-user-static-3.1.0-8.amzn2.0.5', 'cpu':'aarch64', 'release':'AL2'},
{'reference':'qemu-user-static-3.1.0-8.amzn2.0.5', 'cpu':'i686', 'release':'AL2'},
{'reference':'qemu-user-static-3.1.0-8.amzn2.0.5', 'cpu':'x86_64', 'release':'AL2'}
];
flag = 0;
foreach package_array ( pkgs ) {
reference = NULL;
release = NULL;
cpu = NULL;
el_string = NULL;
rpm_spec_vers_cmp = NULL;
allowmaj = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) release = package_array['release'];
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['allowmaj'])) allowmaj = package_array['allowmaj'];
if (reference && release) {
if (rpm_check(release:release, cpu:cpu, reference:reference, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ivshmem-tools / qemu / qemu-audio-alsa / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | ivshmem-tools | p-cpe:/a:amazon:linux:ivshmem-tools |
amazon | linux | qemu | p-cpe:/a:amazon:linux:qemu |
amazon | linux | qemu-audio-alsa | p-cpe:/a:amazon:linux:qemu-audio-alsa |
amazon | linux | qemu-audio-oss | p-cpe:/a:amazon:linux:qemu-audio-oss |
amazon | linux | qemu-audio-pa | p-cpe:/a:amazon:linux:qemu-audio-pa |
amazon | linux | qemu-audio-sdl | p-cpe:/a:amazon:linux:qemu-audio-sdl |
amazon | linux | qemu-block-curl | p-cpe:/a:amazon:linux:qemu-block-curl |
amazon | linux | qemu-block-dmg | p-cpe:/a:amazon:linux:qemu-block-dmg |
amazon | linux | qemu-block-iscsi | p-cpe:/a:amazon:linux:qemu-block-iscsi |
amazon | linux | qemu-block-nfs | p-cpe:/a:amazon:linux:qemu-block-nfs |