Oracle Linux 7 : git (ELSA-2023-3263)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2023-3263.
##

include('compat.inc');

if (description)
{
  script_id(176253);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/05/23");

  script_cve_id("CVE-2023-25652", "CVE-2023-29007");

  script_name(english:"Oracle Linux 7 : git (ELSA-2023-3263)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2023-3263 advisory.

  - Git is a revision control system. Prior to versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8,
    2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1, by feeding specially crafted input to `git apply --reject`, a
    path outside the working tree can be overwritten with partially controlled contents (corresponding to the
    rejected hunk(s) from the given patch). A fix is available in versions 2.30.9, 2.31.8, 2.32.7, 2.33.8,
    2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1. As a workaround, avoid using `git apply` with
    `--reject` when applying patches from an untrusted source. Use `git apply --stat` to inspect a patch
    before applying; avoid applying one that create a conflict where a link corresponding to the `*.rej` file
    exists. (CVE-2023-25652)

  - Git is a revision control system. Prior to versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8,
    2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1, a specially crafted `.gitmodules` file with submodule URLs
    that are longer than 1024 characters can used to exploit a bug in
    `config.c::git_config_copy_or_rename_section_in_file()`. This bug can be used to inject arbitrary
    configuration into a user's `$GIT_DIR/config` when attempting to remove the configuration section
    associated with that submodule. When the attacker injects configuration values which specify executables
    to run (such as `core.pager`, `core.editor`, `core.sshCommand`, etc.) this can lead to a remote code
    execution. A fix A fix is available in versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6,
    2.37.7, 2.38.5, 2.39.3, and 2.40.1. As a workaround, avoid running `git submodule deinit` on untrusted
    repositories or without prior inspection of any submodule sections in `$GIT_DIR/config`. (CVE-2023-29007)

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://linux.oracle.com/errata/ELSA-2023-3263.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N");
  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:N/UI:R/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-2023-25652");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-29007");

  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:"2023/04/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/05/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/05/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:emacs-git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:emacs-git-el");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-all");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-bzr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-cvs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-email");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-gnome-keyring");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-gui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-hg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-instaweb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-p4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:git-svn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:gitk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:gitweb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:perl-Git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:perl-Git-SVN");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux 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/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_release = get_kb_item("Host/RedHat/release");
if (isnull(os_release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 7', 'Oracle Linux ' + 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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var pkgs = [
    {'reference':'emacs-git-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'emacs-git-el-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-all-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-bzr-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-cvs-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-email-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-gui-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-hg-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-instaweb-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-p4-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'gitk-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'gitweb-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'perl-Git-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'perl-Git-SVN-1.8.3.1-25.el7_9', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-1.8.3.1-25.el7_9', 'cpu':'aarch64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-daemon-1.8.3.1-25.el7_9', 'cpu':'aarch64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-gnome-keyring-1.8.3.1-25.el7_9', 'cpu':'aarch64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-svn-1.8.3.1-25.el7_9', 'cpu':'aarch64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-1.8.3.1-25.el7_9', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-daemon-1.8.3.1-25.el7_9', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-gnome-keyring-1.8.3.1-25.el7_9', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'git-svn-1.8.3.1-25.el7_9', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach var 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;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 'EL' + 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 (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && _release) {
    if (exists_check) {
        if (rpm_exists(release:_release, rpm:exists_check) && 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++;
    } else {
        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, 'emacs-git / emacs-git-el / git / etc');
}