Fedora 37 : stb / usd (2023-a93c06a1d9)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2023-a93c06a1d9
#

include('compat.inc');

if (description)
{
  script_id(184397);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/04");

  script_cve_id(
    "CVE-2023-43281",
    "CVE-2023-45661",
    "CVE-2023-45662",
    "CVE-2023-45663",
    "CVE-2023-45664",
    "CVE-2023-45666",
    "CVE-2023-45667",
    "CVE-2023-45675"
  );
  script_xref(name:"FEDORA", value:"2023-a93c06a1d9");

  script_name(english:"Fedora 37 : stb / usd (2023-a93c06a1d9)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Fedora 37 host has packages installed that are affected by multiple vulnerabilities as referenced in the
FEDORA-2023-a93c06a1d9 advisory.

  - stb_image is a single file MIT licensed library for processing images. A crafted image file may trigger
    out of bounds memcpy read in `stbi__gif_load_next`. This happens because two_back points to a memory
    address lower than the start of the buffer out. This issue may be used to leak internal memory allocation
    information. (CVE-2023-45661)

  - stb_image is a single file MIT licensed library for processing images. When
    `stbi_set_flip_vertically_on_load` is set to `TRUE` and `req_comp` is set to a number that doesn't match
    the real number of components per pixel, the library attempts to flip the image vertically. A crafted
    image file can trigger `memcpy` out-of-bounds read because `bytes_per_pixel` used to calculate
    `bytes_per_row` doesn't match the real image array dimensions. (CVE-2023-45662)

  - stb_image is a single file MIT licensed library for processing images. The stbi__getn function reads a
    specified number of bytes from context (typically a file) into the specified buffer. In case the file
    stream points to the end, it returns zero. There are two places where its return value is not checked: In
    the `stbi__hdr_load` function and in the `stbi__tga_load` function. The latter of the two is likely more
    exploitable as an attacker may also control the size of an uninitialized buffer. (CVE-2023-45663)

  - stb_image is a single file MIT licensed library for processing images. A crafted image file can trigger
    `stbi__load_gif_main_outofmem` attempt to double-free the out variable. This happens in
    `stbi__load_gif_main` because when the `layers * stride` value is zero the behavior is implementation
    defined, but common that realloc frees the old memory and returns null pointer. Since it attempts to
    double-free the memory a few lines below the first free, the issue can be potentially exploited only in
    a multi-threaded environment. In the worst case this may lead to code execution. (CVE-2023-45664)

  - stb_image is a single file MIT licensed library for processing images. It may look like
    `stbi__load_gif_main` doesn't give guarantees about the content of output value `*delays` upon failure.
    Although it sets `*delays` to zero at the beginning, it doesn't do it in case the image is not recognized
    as GIF and a call to `stbi__load_gif_main_outofmem` only frees possibly allocated memory in `*delays`
    without resetting it to zero. Thus it would be fair to say the caller of `stbi__load_gif_main` is
    responsible to free the allocated memory in `*delays` only if `stbi__load_gif_main` returns a non null
    value. However at the same time the function may return null value, but fail to free the memory in
    `*delays` if internally `stbi__convert_format` is called and fails. Thus the issue may lead to a memory
    leak if the caller chooses to free `delays` only when `stbi__load_gif_main` didn't fail or to a double-
    free if the `delays` is always freed (CVE-2023-45666)

  - stb_image is a single file MIT licensed library for processing images. If `stbi__load_gif_main` in
    `stbi_load_gif_from_memory` fails it returns a null pointer and may keep the `z` variable uninitialized.
    In case the caller also sets the flip vertically flag, it continues and calls `stbi__vertical_flip_slices`
    with the null pointer result value and the uninitialized `z` value. This may result in a program crash.
    (CVE-2023-45667)

  - Double Free vulnerability in Nothings Stb Image.h v.2.28 allows a remote attacker to cause a denial of
    service via a crafted file to the stbi_load_gif_main function. (CVE-2023-43281)

  - stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may
    trigger out of bounds write in `f->vendor[len] = (char)'\0';`. The root cause is that if the len read in
    `start_decoder` is `-1` and `len + 1` becomes 0 when passed to `setup_malloc`. The `setup_malloc` behaves
    differently when `f->alloc.alloc_buffer` is pre-allocated. Instead of returning `NULL` as in `malloc` case
    it shifts the pre-allocated buffer by zero and returns the currently available memory block. This issue
    may lead to code execution. (CVE-2023-45675)

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://bodhi.fedoraproject.org/updates/FEDORA-2023-a93c06a1d9");
  script_set_attribute(attribute:"solution", value:
"Update the affected stb and / or usd packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/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-2023-45666");

  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:"2023/10/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:37");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:stb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:usd");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Fedora Local Security Checks");

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

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  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/RedHat/release');
if (isnull(os_release) || 'Fedora' >!< os_release) audit(AUDIT_OS_NOT, 'Fedora');
var os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Fedora');
os_ver = os_ver[1];
if (! preg(pattern:"^37([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Fedora 37', 'Fedora ' + 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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Fedora', cpu);

var pkgs = [
    {'reference':'stb-0^20231011gitbeebb24-12.fc37', 'release':'FC37', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'usd-22.05b-28.fc37', 'release':'FC37', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach 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;
  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['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 (reference && _release) {
    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, 'stb / usd');
}