TencentOS Server 2: git (TSSA-2025:0737)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2025:0737.
##

include('compat.inc');

if (description)
{
  script_id(275941);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/20");

  script_cve_id("CVE-2025-48384");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2025/09/15");

  script_name(english:"TencentOS Server 2: git (TSSA-2025:0737)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 2 host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is,
therefore, affected by a vulnerability as referenced in the TSSA-2025:0737 advisory.

    Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:

    CVE-2025-48384:
    Git is a fast, scalable, distributed revision control system with an unusually rich command set that
    provides both high-level operations and full access to internals. When reading a config value, Git strips
    any trailing carriage return and line feed (CRLF). When writing a config entry, values with a trailing CR
    are not quoted, causing the CR to be lost when the config is later read. When initializing a submodule, if
    the submodule path contains a trailing CR, the altered path is read resulting in the submodule being
    checked out to an incorrect location. If a symlink exists that points the altered path to the submodule
    hooks directory, and the submodule contains an executable post-checkout hook, the script may be
    unintentionally executed after checkout. This vulnerability is fixed in v2.43.7, v2.44.4, v2.45.4,
    v2.46.4, v2.47.3, v2.48.2, v2.49.1, and v2.50.1.

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://mirrors.tencent.com/tlinux/errata/tssa-20250737.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-48384");

  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:"2025/07/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:git");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

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

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/etc/os-release", "Host/TencentOS/rpm-list", "Host/cpu");

  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) || 'TencentOS' >!< os_product) audit(AUDIT_OS_NOT, 'TencentOS');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'TencentOS');
if (! preg(pattern:"^2([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 2.x', 'TencentOS ' + os_version);

if (!get_kb_item('Host/TencentOS/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, 'TencentOS', cpu);

var constraints = [
  {
    'release': '2',
    'pkgs': [
      {'reference':'emacs-git-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'emacs-git-el-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-1.8.3.1-25.tl2.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-all-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-bzr-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-cvs-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-daemon-1.8.3.1-25.tl2.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-debuginfo-1.8.3.1-25.tl2.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-email-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-gnome-keyring-1.8.3.1-25.tl2.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-gui-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-hg-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-instaweb-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-p4-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-svn-1.8.3.1-25.tl2.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'gitk-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'gitweb-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perl-Git-1.8.3.1-25.tl2.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perl-Git-SVN-1.8.3.1-25.tl2.1', '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_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');
}