Fedora 45 : libgit2_1.9 / rust-libgit2-sys (2026-7c3fc14617)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2026-7c3fc14617
#

include('compat.inc');

if (description)
{
  script_id(329273);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/23");

  script_cve_id(
    "CVE-2026-53583",
    "CVE-2026-53584",
    "CVE-2026-53585",
    "CVE-2026-53586",
    "CVE-2026-53587"
  );
  script_xref(name:"FEDORA", value:"2026-7c3fc14617");

  script_name(english:"Fedora 45 : libgit2_1.9 / rust-libgit2-sys (2026-7c3fc14617)");

  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 45 host has packages installed that are affected by multiple vulnerabilities as referenced in the
FEDORA-2026-7c3fc14617 advisory.

    - Update libgit2 to version 1.9.6.
    - Update the libgit2-sys Rust crate to the corresponding version 0.18.7.

    This includes fixes for various security issues, including - but not limited to:

    - [CVE-2026-53583](https://github.com/libgit2/libgit2/security/advisories/GHSA-h7gc-w2gg-p9xp)
    - [CVE-2026-53584](https://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm)
    - [CVE-2026-53585](https://github.com/libgit2/libgit2/security/advisories/GHSA-27m5-gxxh-x79j)
    - [CVE-2026-53586](https://github.com/libgit2/libgit2/security/advisories/GHSA-2889-x8f6-mc4x)
    - [CVE-2026-53587](https://github.com/libgit2/libgit2/security/advisories/GHSA-pm24-4jhq-3xvm)

    The Fedora package is not affected by [GHSA-
    wfx7-g85r-q6vw](https://github.com/libgit2/libgit2/security/advisories/GHSA-h7gc-w2gg-p9xp) since Fedora
    packages always linked the system PCRE2 and did not use the bundled PCRE.


Tenable has extracted the preceding description block directly from the Fedora 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://bodhi.fedoraproject.org/updates/FEDORA-2026-7c3fc14617");
  script_set_attribute(attribute:"solution", value:
"Update the affected libgit2_1.9 and / or rust-libgit2-sys 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: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:H/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-2026-53587");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:45");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:libgit2_1.9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:rust-libgit2-sys");
  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) 2026 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('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Fedora' >!< os_product) audit(AUDIT_OS_NOT, 'Fedora');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Fedora');
if (! preg(pattern:"^45([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Fedora 45', 'Fedora ' + os_version);

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 constraints = [
  {
    'release': '45',
    'pkgs': [
      {'reference':'libgit2_1.9-1.9.6-1.fc45', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rust-libgit2-sys-0.18.7-1.fc45', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      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, 'libgit2_1.9 / rust-libgit2-sys');
}