Oracle Linux 7 : squid (ELSA-2025-19167)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2025-19167.
##

include('compat.inc');

if (description)
{
  script_id(275771);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/19");

  script_cve_id("CVE-2025-62168");

  script_name(english:"Oracle Linux 7 : squid (ELSA-2025-19167)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the
ELSA-2025-19167 advisory.

    - Fixes CVE-2025-62168, squid: Squid vulnerable to information disclosure via
    - Fixes CVE-2025-54574, add URN access disabling config options [Orabug: 38350105]
    - Disable ESI support [CVE-2024-45802][Orabug: 37289058]
    - Resolves: CVE-2021-28651 squid: Bug 5104: Memory leak in RFC 2169 response parsing (#778)
    - Resolves: CVE-2021-28652 squid: Bug 5106: Broken cache manager URL parsing (#788)
    - Resolves: CVE-2021-31806,31807,31808 squid: Handle more Range requests (#790)
    - Resolves: CVE-2021-33620 squid: Handle more partial responses (#791)
    - Resolves: RHEL-16779 - squid: NULL pointer dereference in the gopher protocol
      code -- Remove support for Gopher protocol (CVE-2023-46728)
    - Resolves: RHEL-18176 - squid: Buffer over-read in the HTTP Message processing
      feature (CVE-2023-49285)
    - Resolves: RHEL-18171 - squid: Incorrect Check of Function Return Value In
      Helper Process management (CVE-2023-49286)
    - Resolves: RHEL-16758 - squid: Denial of Service in SSL Certificate validation
      (CVE-2023-46724)
    - Resolves: RHEL-19557 - squid: denial of service in HTTP request parsing
      (CVE-2023-50269)
    - Resolves: RHEL-26082 - squid: denial of service in HTTP header parser
      (CVE-2024-25617)
    - Resolves: RHEL-14789 - squid: Denial of Service in HTTP Digest Authentication
      (CVE-2023-46847)
    - Resolves: #2130254 - CVE-2022-41318 squid: buffer-over-read in SSPI and SMB
      authentication

Tenable has extracted the preceding description block directly from the Oracle 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://linux.oracle.com/errata/ELSA-2025-19167.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected squid, squid-migration-script and / or squid-sysvinit packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
  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:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-62168");

  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:"2025/10/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/19");

  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:squid");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:squid-migration-script");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:squid-sysvinit");
  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) 2025 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('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) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_product)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
if (! preg(pattern:"^7([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Oracle Linux 7.x', 'Oracle Linux ' + 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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);
if ('x86_64' >!< cpu) audit(AUDIT_ARCH_NOT, 'x86_64', cpu);

var constraints = [
  {
    'release': '7',
    'pkgs': [
      {'reference':'squid-3.5.20-17.0.9.el7_9.13', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'7'},
      {'reference':'squid-migration-script-3.5.20-17.0.9.el7_9.13', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'7'},
      {'reference':'squid-sysvinit-3.5.20-17.0.9.el7_9.13', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'7'}
    ]
  }
];

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, 'squid / squid-migration-script / squid-sysvinit');
}