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Debian dla-3362 : qemu - security update

Debian DLA-3362-1: QEMU LTS security update with multiple vulnerabilitie

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#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-3362. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(172554);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/01/22");

  script_cve_id(
    "CVE-2020-14394",
    "CVE-2020-17380",
    "CVE-2020-29130",
    "CVE-2021-3409",
    "CVE-2021-3592",
    "CVE-2021-3593",
    "CVE-2021-3594",
    "CVE-2021-3595",
    "CVE-2022-0216",
    "CVE-2022-1050"
  );
  script_xref(name:"IAVB", value:"2020-B-0075-S");

  script_name(english:"Debian dla-3362 : qemu - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-3362 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-3362-1                [email protected]
    https://www.debian.org/lts/security/                      Sylvain Beucler
    March 14, 2023                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : qemu
    Version        : 1:3.1+dfsg-8+deb10u10
    CVE ID         : CVE-2020-14394 CVE-2020-29130 CVE-2021-3592 CVE-2021-3593
                     CVE-2021-3594 CVE-2021-3595 CVE-2022-0216 CVE-2022-1050
    Debian Bug     : 970937 979677 986795 989993 989994 989995 989996 1014589 1014590

    Multiple security issues were discovered in QEMU, a fast processor
    emulator, which could result in denial of service, information leak,
    or potentially the execution of arbitrary code.

    CVE-2020-14394

        An infinite loop flaw was found in the USB xHCI controller
        emulation of QEMU while computing the length of the Transfer
        Request Block (TRB) Ring. This flaw allows a privileged guest user
        to hang the QEMU process on the host, resulting in a denial of
        service.

    CVE-2020-17380/CVE-2021-3409

        A heap-based buffer overflow was found in QEMU in the SDHCI device
        emulation support. It could occur while doing a multi block SDMA
        transfer via the sdhci_sdma_transfer_multi_blocks() routine in
        hw/sd/sdhci.c. A guest user or process could use this flaw to
        crash the QEMU process on the host, resulting in a denial of
        service condition, or potentially execute arbitrary code with
        privileges of the QEMU process on the host.

    CVE-2020-29130

        slirp.c has a buffer over-read because it tries to read a certain
        amount of header data even if that exceeds the total packet
        length.

    CVE-2021-3592

        An invalid pointer initialization issue was found in the SLiRP
        networking implementation of QEMU. The flaw exists in the
        bootp_input() function and could occur while processing a udp
        packet that is smaller than the size of the 'bootp_t' structure. A
        malicious guest could use this flaw to leak 10 bytes of
        uninitialized heap memory from the host.

    CVE-2021-3593

        An invalid pointer initialization issue was found in the SLiRP
        networking implementation of QEMU. The flaw exists in the
        udp6_input() function and could occur while processing a udp
        packet that is smaller than the size of the 'udphdr'
        structure. This issue may lead to out-of-bounds read access or
        indirect host memory disclosure to the guest.

    CVE-2021-3594

        An invalid pointer initialization issue was found
        in the SLiRP networking implementation of QEMU. The flaw exists in
        the udp_input() function and could occur while processing a udp
        packet that is smaller than the size of the 'udphdr'
        structure. This issue may lead to out-of-bounds read access or
        indirect host memory disclosure to the guest.

    CVE-2021-3595

        An invalid pointer initialization issue was found in the SLiRP
        networking implementation of QEMU. The flaw exists in the
        tftp_input() function and could occur while processing a udp
        packet that is smaller than the size of the 'tftp_t'
        structure. This issue may lead to out-of-bounds read access or
        indirect host memory disclosure to the guest.

    CVE-2022-0216

        A use-after-free vulnerability was found in the LSI53C895A SCSI
        Host Bus Adapter emulation of QEMU. The flaw occurs while
        processing repeated messages to cancel the current SCSI request
        via the lsi_do_msgout function. This flaw allows a malicious
        privileged user within the guest to crash the QEMU process on the
        host, resulting in a denial of service.

    CVE-2022-1050

        A flaw was found in the QEMU implementation of VMWare's
        paravirtual RDMA device. This flaw allows a crafted guest driver
        to execute HW commands when shared buffers are not yet allocated,
        potentially leading to a use-after-free condition.
        Note: PVRDMA is disabled in buster, but this was fixed
        preventively in case this changes in the future.

    For Debian 10 buster, these problems have been fixed in version
    1:3.1+dfsg-8+deb10u10.

    We recommend that you upgrade your qemu packages.

    For the detailed security status of qemu please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/qemu

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/qemu");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-14394");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-17380");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-29130");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3409");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3592");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3593");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3594");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3595");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-0216");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-1050");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/qemu");
  script_set_attribute(attribute:"solution", value:
"Upgrade the qemu packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/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:L/AC:L/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-2022-1050");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/03/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-block-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-arm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-data");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-gui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-mips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-misc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-ppc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-sparc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system-x86");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-user");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-user-binfmt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-user-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  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:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2023-2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '10.0', 'prefix': 'qemu', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-block-extra', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-guest-agent', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-kvm', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-arm', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-common', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-data', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-gui', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-mips', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-misc', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-ppc', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-sparc', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-system-x86', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-user', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-user-binfmt', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-user-static', 'reference': '1:3.1+dfsg-8+deb10u10'},
    {'release': '10.0', 'prefix': 'qemu-utils', 'reference': '1:3.1+dfsg-8+deb10u10'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'qemu / qemu-block-extra / qemu-guest-agent / qemu-kvm / qemu-system / etc');
}

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