Ubuntu 20.04 LTS / 22.04 LTS / 23.10 / 24.04 LTS : Git vulnerabilities (USN-6793-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6793-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(198042);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/28");

  script_cve_id(
    "CVE-2024-32002",
    "CVE-2024-32004",
    "CVE-2024-32020",
    "CVE-2024-32021",
    "CVE-2024-32465"
  );
  script_xref(name:"USN", value:"6793-1");

  script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS / 23.10 / 24.04 LTS : Git vulnerabilities (USN-6793-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.10 / 24.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-6793-1 advisory.

    It was discovered that Git incorrectly handled certain submodules. An attacker could possibly use this
    issue to execute arbitrary code. This issue was fixed in Ubuntu 22.04 LTS, Ubuntu 23.10 and Ubuntu 24.04
    LTS. (CVE-2024-32002)

    It was discovered that Git incorrectly handled certain cloned repositories. An attacker could possibly use
    this issue to execute arbitrary code. (CVE-2024-32004)

    It was discovered that Git incorrectly handled local clones with hardlinked files/directories. An attacker
    could possibly use this issue to place a specialized repository on their target's local system.
    (CVE-2024-32020)

    It was discovered that Git incorrectly handled certain symlinks. An attacker could possibly use this issue
    to impact availability and integrity creating hardlinked arbitrary files into users repository's
    objects/directory. (CVE-2024-32021)

    It was discovered that Git incorrectly handled certain cloned repositories. An attacker could possibly use
    this issue to execute arbitrary code. (CVE-2024-32465)

Tenable has extracted the preceding description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-6793-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:H/PR:N/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-2024-32002");

  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:"2024/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/05/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:23.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-all");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-cvs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-daemon-run");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-daemon-sysvinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-el");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-email");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-gui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-man");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-mediawiki");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-svn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gitk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gitweb");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('20.04' >< os_release || '22.04' >< os_release || '23.10' >< os_release || '24.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04 / 23.10 / 24.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '20.04', 'pkgname': 'git', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-all', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-cvs', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-daemon-run', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-daemon-sysvinit', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-el', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-email', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-gui', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-man', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-mediawiki', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'git-svn', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'gitk', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '20.04', 'pkgname': 'gitweb', 'pkgver': '1:2.25.1-1ubuntu3.12'},
    {'osver': '22.04', 'pkgname': 'git', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-all', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-cvs', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-daemon-run', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-daemon-sysvinit', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-email', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-gui', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-man', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-mediawiki', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'git-svn', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'gitk', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '22.04', 'pkgname': 'gitweb', 'pkgver': '1:2.34.1-1ubuntu1.11'},
    {'osver': '23.10', 'pkgname': 'git', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-all', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-cvs', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-daemon-run', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-daemon-sysvinit', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-email', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-gui', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-man', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-mediawiki', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'git-svn', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'gitk', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '23.10', 'pkgname': 'gitweb', 'pkgver': '1:2.40.1-1ubuntu1.1'},
    {'osver': '24.04', 'pkgname': 'git', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-all', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-cvs', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-daemon-run', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-daemon-sysvinit', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-email', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-gui', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-man', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-mediawiki', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'git-svn', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'gitk', 'pkgver': '1:2.43.0-1ubuntu7.1'},
    {'osver': '24.04', 'pkgname': 'gitweb', 'pkgver': '1:2.43.0-1ubuntu7.1'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'git / git-all / git-cvs / git-daemon-run / git-daemon-sysvinit / etc');
}